What am I doing wrong??

Our son is almost 7 weeks old. I know he’s young and its the “fourth trimester” and I shouldnt be expecting miracles...but he constantly wants to be held. I love the snuggles. But it also means he wakes a few minutes after i set him down for a nap. He won’t sleep unless in someone’s arms or my sling for naps and bedtime and we’ve resorted to bed sharing for the sake of not going crazy.

I’ve tried getting him to sleep without rocking, waiting 15-20 minutes after he stops REM cycling, swaddled, unswaddled, swing, bassinet, pack n play, softer sheet, warmed up bed, etc.

I dont know what to try next...help??