Transitioning to a crib

My two month old is a great sleeper at night. She sleeps 6-11 hours in her bassinet, in her room, and has been putting herself to sleep (except for tonight 😛😐). I've been trying to get her used to her crib during nap time. She will only sleep an hour tops in the crib. When I let her nap with me, she sleeps for 2-3 hours. Any advice on how to get her more used to her crib? I know she's young...am I stressing for no reason? Any advice would be great!