@ILoveAnimeGals Hip toys are trouble in general, to include the cleaning routine, to the point that I won't bother with them anymore. So yeah, your troubles are going to be more but its doable.

You must have a model that is too big to clean in a sink I suppose, but if I understand what you've mentioned: the model you have is the type where it's holes go completely through the hip in order for running water to pass through the hole for cleaning?

If so then you could: 1) first run some strong low-lint paper towels through it to absorb the bulk of the fluids, 2) then spray in some Berman's Anti- bacterial toy cleaner, 3) run the paper towels in it to pick up the cleaner, 4) then spray 70% rubbing alcohol in it and let that set in it for an hour or two, 5) run paper towels through the hole to pick up the alcohol.

My favorite paper towels towels I use on my sleeves are the Great Value Ultra Strong Split Sheets from Walmart.

I gave up on hip toys after I got the Meiki Plush Hip, allowing me to install a variety of onaholes.

@ILoveAnimeGals theres a few things you can do, i would recommend when you go to shower, try to hide it/wrap it up in the clothes you would be wearing along with the towel. Then you can clean it in the shower and hide it with your dirty clothes until you get to your room. Dry it, and then use again. it does set you on a timer though since you would need to shower everytime you need to clean. the other option is not recommended as it is not proper care, but you could get some rags with the cleaning solution and maybe a spray bottle and clean it the best you can that way. the only issue you could run into here is if you dont clean it well enough bacteria could grow and it would ruin the toy.

@ILoveAnimeGals A decent sized enema/douche bulb and thin nozzle works really well in this case. I wash a hip and a sleeve in my sink using a squeeze bulb filled with a 1:5 mixture mild anti-bacterial hand soap and water. Run that through a few times, using your finger to rub it around the insides a bit, then flush it through with bulbs filled with fresh water. Dry the outside with a microfiber towel, and the insides with a dry-stick. And if you like, once everything is dry, dust the outside with talcum or cornstarch babypowder to give the skin a smooth, less sticky feel. (TPE tends to get a little sticky after a while). Now if you don't have access to a sink in your room, (ie personal bathroom), I've heard of people using a bucket to do this.

As for just finishing outside and dealing with the lube inside, you could consider using a condom when you use your toy, that way you only need to clean the outside with a spray bottle, and clean the insides less regularly. If you try this without a condom, you have to remember, even if you finish on the outside, you're still going to shed skin cells and therefore bacteria on the insides and that can fester if left uncleaned for too long.

@ILoveAnimeGals You are going to have to give it a thorough washing eventually, there's no getting around it. In your room you should have a towel that you used to dry yourself from the shower at some point, you can use that and a water bottle + anti-bacterial spray for very basic rinsing out. Finishing inside the toy is what will make it spoil the quickest by the way, if you can prevent yourself from doing that by maybe pulling out at the last second, it may help, but then again what's the point if you can't even finish inside your toy right?

Either way you will have to give it serious cleanings no matter what, so my best advice is to hide it by wrapping it inside a towel and then going into the bathroom to take a shower with it. This may not work with a hip sized toy, but then again it just might because you can hide pretty big things inside a towel, whenever you are going to take a shower just wrap your toy inside the towel you will use to dry yourself and then try to like bunch up the towel a bit so it isn't noticeable, then casually go in the bathroom to take your shower, clean the toy inside the shower and take a shower like you normally would. Then dry yourself, wrap it back in that same towel and then go back to your room. You can hide things really well inside a towel that just appears "bunched up", heck you could clean your toy every day using this method.

@ILoveAnimeGals 
I would purchase a drawstring gym bag (10 bucks) and put the hip toy in that. My hip toy is in a drawstring bag and i wash it @ maybe 2-4 am in the bath tub. Make a habit of getting up for midnight+ trips. It looks natural taking your bag to the bathroom for random late night showers with your hip toy.

3/2/2021 edit: Forgot to mention the drawstring bag i got for 10 bucks on amazon is by peicees. It is 19.6" x 17" (The large size) and fits my hip toy entirely. No snug spaces, theres at least two inches to wiggle hip out in or out. It's got nylon on one side, and mesh net on the other side BUT you can't see through it ;). Basically my dream onahole bag.

@ILoveAnimeGals The people you live with masturbate, too, and are less interested in your bathroom time than you think they are. Use a smaller onahole to finish and experiment to see which lubes are less likely to go funky. I have had many stored for months with lube and be the same afterwards. Some of the suggestions for in room cleaning sound not worth the trouble and more likely to attract attention. An ineffective clean and dry might be more likely to go bad than simple lube. It takes a lot of water just to dissolve the lube, so taking water to your room is not practical. "Hey, buddy, why do you keep taking buckets of water to your room?" Eventually, oops, you will spill the water. And why would anyone think alcohol on something with oil content would be a good idea? It will damage the material. Plus, water based lube needs water to rinse. Anything "anti-bacterial" is necessarily pro-fungal. Stressing out too much sort of ruins it, doesn't it? Drink a beer. Meditate. Open a fortune cookie (It might have better advice). The worry you are feeling may be mis-directed. P.S. I'm old. I've had toys like this for decades.

@ILoveAnimeGals I do not envy you. The idea of enjoying masturbation in general when living with others sucks. To do so with toys, hiding them, the possible noise of using them, cleaning them. oy just so many headaches. You've already gotten the best advice already from the other posters regarding cleaning. I'm not sure you can fully get away with not flushing them out with water at times. I'd almost hide them in a toiletry bag, and wash them while using the bathroom for your shower. For a hip it's trickier. Maybe bring in a knapsack? Or yeah just go in late at night.

@ILoveAnimeGals Use a condom, then you only have to clean up lube. You may have to order online to get unlubricated ones to avoid lube incompatibilities.

Or get a totebag that you can hide the toy in, with other bathroom/shower supplies, to get it into the bathroom and take a shower with it. Mask cleaning it with cleaning yourself.