Sleep help 🥴

So baby is 7 weeks 3 days and we are having a tough time with sleep recently. In the beginning we had zero issues. He slept anywhere from 3-8 hour stretches without a peep. Now? He wants to be held to go to sleep or in the carrier if it’s nap time. That’s if he’s not fighting sleep. He can sleep up to 8 hour stretches at night but sometimes I have to let him fall asleep with me and my husband has to move him into the pack and play. Or he will be completely knocked out and when I put him in or even walk into the bedroom he wakes up immediately. I’m talking wide eyed and/or crying. I’m losing my steam. I’m trying to consistently put him in there when he falls asleep but sometimes I’ll only get 15 mins. I’m also trying to wait it out and see if he puts himself back to sleep (within reason) and he will lay there or try for a few minutes but that’s all. Idk what else to do! Do I just keep trying and pray he ends up falling asleep for longer stretches? Help 😭