Sleep! Need advice!

My baby (5 weeks tomorrow) goes down for bedtime around 8:30/9ish. I change, swaddle, then feed him (breastfeeding) and put him in his bassinet with the white noise on. He’s only sleeping for about 2 hour chunks, and when he wakes up I unswaddle and change him then feed, and he seems to fall asleep while BFing. When he does that, he wakes up about an hour later. I’m a tired mama looking for some advice!! Did anyone buy/take sleep consultation or baby sleep classes from an expert?