J hit the 4 month regression a month early at 3 months and it lasted until we ultimately sleep trained him at 6 months. It was sooo hard because I was getting 3-4 hours of sleep a night, broken up, because of all his wake ups.

But he's going through an 18 mos regression right now (a month early) and it's the pits. It's been about 3 weeks. It's heartbreaking. I think this is the harder one because of his age - he is more aware and knows I'm just sitting out here while he cries. At least when he was 3-6 months he could sleep with us, or I could nurse him or rock him to sleep and he didn't cry at all - those three things were my magic tricks.

But I have no magic tricks at 18 months! He won't sleep with us, he won't rock to sleep, he weaned months ago, he doesn't take bottles. I'm at a loss. I don't know how to put him to sleep tear free!

What was the worst regression for your baby?