under 3 months is okay to rock & hold them to sleep but after this will become a sleep association

they’ll wake up within 30 mins - 40 mins because they’re not in the same location as what they were when they fell asleep with you in your arms

feed outside the room 20 mins - 30 mins before bed time

put them to down when they’re drowsy not asleep

ensure you’re sticking to an age appropriate routine