is what I'm doing wrong? 6 week old sleep routine

My 6 week old is an awesome sleeper- he has been since he was born. He sleeps long stretch every night (between 7-8 hours) but I'm an extremely light sleeper and wake up to every noise he makes and I'm constantly getting up and checking on him so I'm having very broken sleep 😫 he wakes up for a feed between 5 or 6am and I'm still really tired so I feed him and then put him down to sleep again even though he only just slept for like 8 hours. He goes back down pretty easily and will then sleep for another 3 or so hours. Is this selfish of me to let him have this much sleep at once just because I'm still tired when he wakes up? I feel really guilty about it. This morning I lay him in bed with me and just talked to him for about an hour before we both went back to sleep and I felt a bit better about it. Help 😫