Haha very nice game, I actually played with the idea of reversing the ageing process or devolution to get around as well but didn't think of a good execution for it, you definitely found a good execution.
The pixel art was great although the nurses could do with having limbs as they look like they are all wrapped up in blankets. I liked the music but the volume should have definitely been adjustable as this is a 2 minute implementation.
The gameplay needed a bit more to do as its almost a walking simulator at the moment, I managed to get locked out of the game here as well:
I tried shifting into baby form and holding right to no prevail.