I’m pretty sure my 4 mo son is going through a sleep regression for the past two weeks. He was sleeping 7 hours straight on his own. Now he’ll wake up after 4.5 hours then possibly again an hour later, and then an hour later. After talking to his doctor, she suggested to let him cry as we’ve been going in and giving him a pacifier. The first couple of nights it worked like a charm and he was out in about 10 minutes. Last night was a little rough. He cried for 15 minutes and I guess I wasn’t strong enough! Lol I had to go in and pat his head and give him a pacifier. He woke up again 20 minutes later, I let him cry and he was out again in 10 minutes. Any other moms experience this with your kids? Did they eventually get past it and start sleeping well again?