Hi names chris just had my first baby boy he is now about 3wks i need advice with how can i put him to sleep?

well like i said the my baby boy is about 3weeks on sunday well we've been having a problem putting him to sleep now and i mean now before is it was much easy we can lay him on his back because he'll wake up super fast he'll start to huff and puff and fuss so we try laying him on his side mhm huh ok miner good he''ll sleep for maybe 2hours well now for some reason you know when you have to burt the baby and his face is next to yours he falls asleep like that but he''ll like it if the person is leaning its like hes on his stomach but he really isnt it still looks like your burting him do you think this will cause sids and for people who dont really know(sudden,infant,death,syndrome)and please i am in need of help he hasent even lived that long you know well another thing he like sleeping on top of pillows instead of his crib ive been trying for really long hope what where doing inst bad