DS is 9 months and we have been co-bedding until now. We started sleep training in his crib last week. He is still crying a ton when I put him down. Tonight was 40 mins Day 3 it was only 5 mins of crying so I thought we were in the clear. However he has pretty much been STTN when before he woke every hour or two.

We are doing ferber so we are doing checks. I've had to change his diaper a few nights on the first check because he has pooped.

Do you think he just hasn't figured out how to self soothe? Will it take him longer because it is such a big change? He sleeps so much better at night and is much happier during the day so I feel like we shouldn't move him back to our bed because of this.