While you do, at least, bend some of the general rules of animation like keeping the movements all fluid, using the same techniques for most common actions (like characters talking) and so forth, you've started developing a style that by context, maintains consistency. You're actually managing to do that part really well. (yeah, surprise... I'm not bashing it, I'm giving a thumbs up)... I just thought it worth mentioning so you maybe take note or something and even so others can go back to it and check it again... see what I see...
There's lots of ammo' for critiquing bathroom's, their uses and maintenance... there's really enough out there for this to be a regular gig, if that's something you want to try. (being a student is tough enough so a script that almost writes itself is helpful)... I don't know if you even care about learning Japanese, but... (stay with me here) You might really have fun (find inspiration?) in a spot from "Japanese From Zero" on YT... He did a show "How to use the Japanese Squat Toilet"... Now, admittedly, I've been, so I could identify, but it was pretty fun... Just in case you need a kinda gross giggle one late night... Or you might be inspired to animate that story... lolz...
Anyways, don't forget to breathe, relax, and keep on keeping on... :o)