Outgrown bassinet

Has anyone else’s baby outgrown their bassinet already? Her arms touch the sides and I noticed she slept better in her crib during naps when she can stretch out. My mom told me to put her in the pack n play with a mattress, but it seems that does not comply with safe sleep. I’m not ready to transition her to the crib in her nursery. I’m thinking maybe a mini crib would work?