An interesting premise, I think the characters look cute and I like the expansion.
However right now the characters "jump around" a bit too much. You don't need to have them move all the time, having the character change when they switch expressions or switch scenes is good enough.
* (Otherwise, it's ok to have them stay in the same part of the screen).
The only other thing is that the scaling is a bit off right now, sometimes the backgrounds look way too large for the characters, like it's too far zoomed in.
I'll check in on this game in a few months, see how it goes. If you end up adding in any hips/thighs growth and fix the "jumpiness" I'd be down to support the game via Patreon.
Good luck.