Falling back to sleep after night feeds

Any other parents have trouble falling back to sleep after a night feed? My little guys 8 weeks and a pretty decent sleeper. But my problem is after he wakes and I put him down I can't seem to fall back to sleep. I'm only up for maybe 20 minutes with him. I try not to wake myself up too much, I sort of try and operate on autopilot but for example tonight he got up at 3:10. Was back down by 3:30 and I laid in bed until 6:30 then finally got up. It's so frustrating.