it is normal, my son too
do find out why she don't allow you to remove her cloth n bath
I sent my boy to childcare when he's 23months also, he's well trained in wearing mask but after a week of school he refused to wear cause school didn't insist them to wear, he saw kids around not wearing so he follow
2nd week he refused to go shower and change diapers after poo, we talk to him after he calm down n actually find out the person who changed his diapers at school frightened him (till now didn't really know what that person did to my son but I spoke to both his teacher to take note on this)
We noticed a lot of changes after sending him to school, he picked up a lot bad habit ie he will say *kanasai* but he learn a lot of new/good things too
always communicate with teachers, tell them what you noticed and your expectations
another example is teacher don't change mask for him, I teach my son to remind teacher change his mask after meal or whenever it's wet
Anonymous