Help! Struggling with sleep

My LO is 6 weeks and had previously been sleeping REALLY well. 4.5-5 hour stretches at night. For the past week and a bit I can't get him to go for more than 2 hours. Sometimes it's every hour he wakes even after being fed. We usually start bedtime routine which is swaddle and nurse anywhere from 7:30-8.

He can nap during the day for a 3 hour stretch which he's usually lying on me for. And he often wants to nap for another 2-3 hour stretch at some point during the day. I wonder if I need to stop letting him do that and not let him nap as long so he sleeps longer at night? And I struggle with the evenings because he often wants to nurse and then go to sleep but that usually means he's napping from 4 or 5 to 6 or later sometimes. I know that's a little late but he just becomes inconsolable if he's awake for more than an hour.

Anyways, the long and short of it is.. I need some advice! Im losing my mind not getting more than an hour stretch of sleep at a time.