I’ve read that sleep regression only starts at 4 months but my son (almost 11 weeks) has started out of nowhere not wanting to nap during the day. He only naps when we leave the house in the car seat, other than that he doesn’t want to nap and when I finally get it to settle down to sleep it’s max 20-40 mins and that’s it for the day. You can tell that he fights his sleep, when he’s about to knock out he starts moving his head side to side and like almost hitting himself to stay awake. He does do his night mostly anywhere between 5-7 hours. Is anyone else going through this ?