Thank you everyone for the opinions.
I spoke with mom last evening and we have agreed to teaching self soothe first as too much change will just cause for a longer adjustment. She said she is working on cio she understands that it's in better interest for him and everyone else in my care to follow my routine, she has apologized for not adjusting him before starting care.
It's no good to start him on a soother at 10 mths (my 3 children were off of them around this age) I have had ss for a fan? Nature music(playing before nap and continue through his nap).
So far today we had breakfast, gave him some bottle changed diaper and put in playpen. Of. ourse he is crying. Now would you just leave him for the half hour regardless if he cries or goes to sleep then just get him after 30 mins and go on with activities or leave him longer?? And as for pm nap would you put him in the play pen at same time as everyone else and let him cio(in his own room)?