Baby wont go back to sleep

Hey mamas! My little boy is 7 weeks old, he's breastfed and doesn't go very long between feeds. We put him to bed about 10pm and he'll generally settle himself from drowsy and sleep for around 3/4 hours.

Problem is, once he wakes for his feed he just will not go back to sleep! Last night it took me 3 hours to get him back off to sleep and by that point it was morning. Being awake from 1am every day is killing this mama off 😅

I don't play with him, nappy changes are quick and quiet, i use white noise and swaddle him and will nurse or rock him to sleep but about 5 minutes after being put back in his cot hes wide awake.

Any advice?? X