How do i get my 7 week old on a schedule?

Our nightly routine is bath at 8 then lotion/mage, then IF he's hungry a bottle, then i hold and rock him until he falls asleep,.. usually by 10, but sometimes much later. He is getting big and im tired of rocking him, so tonight i did everything normally except i fed him, then rocked till he became drowsy, then i put him in his crib and walked away.. Well of course he started crying, i tried his pacifier and he did not want it, so i decided to let him cry it out,.. unfortunately within 10 minutes he was crying so hard he was choking on his own saliva.. so i got him out and rocked him to sleep.. i am also only wanting to give him a bath every other night, but how would that work?! Please any advice would help! thankyou :)