Sleep help

Sarah
I'm a FTM with a 10 week old. His sleep habits are up and down. The main issue is being put down to sleep. Naps in the day can be difficult. He'll fall asleep on me or when I'm using the baby carrier but as soon as I put him down in the crib or inclined bassinet he'll wake up within minutes and cry. He might go 20 minutes but that's rare. Just now I tired to put him down, immediately woke up and cried, and then I put him in his car seat and he immediately goes back to sleep. At night it's the same thing. He can fall asleep on me and I'll try to wait 5 or 10 minutes before putting him down in the bassinet but he'll wake back up 50% of the time. Now when he does go to sleep he can sleep for 8 hours or he might wake up once or twice for a feeding/diaper change and then he'll go back down easy. I just don't want him to only be able to go to sleep lying on me. At times we've done co-sleeping but that makes me anxious and I don't sleep well (i only do this when I'm exhausted and have tried several times to put him down). Any suggestions?