Michi
To be honest , I had a prob with my MIL too. Same lah! What feed water, cannot let baby cry, takes so long to warm up the EBM, put ruyi oil. I was really miserable during the time I spent with her. And I stayed home with the baby till 14 mths, yet she still wanna interfere & tell me what to do.
This time round, I opted to do my own confinement at my own home. No one's gonna interfere coz they can't see what I'm doing.
For EBM, by the time u return to work, it'll be 4 mths. Your baby shd be on some kind of established schedule by then, so your MIl shd know when the baby needs to feed, & she shd know when to put the EBM into the warmer to warm right? If she still doesn't know when to feed the baby, then sorry, to be very blunt, I dun think she can manage to look after a baby.
As for water.. hiaz, can't help you there. As long as she doesn't feed so much till the baby gets diarrhoea, then just cotta close 1 eye lor.
Powder on bottom... can u ask her to put diaper cream instead?
Seriously, if u need to depend on her to look after your baby, & if she's very stubborn on her ways, there's nothing u can do except to close 1 eye & accept her methods.