co sleeping/ bassinet/crib?!

i have 3 weeks left!i just got a bassinet i’m wondering what i can put in there i know no stuffed animals and pillows due to suffocating, but what about a blanket/swaddle? like i want to keep my baby warm ya know? i’m a FTM, so bare with me, i also have a ‘pillow’ to shape the babies head, the pillow is flat with a hole in it.

or should i get a wedge to elevate at an angle? i have a owlet.

i just don’t know what i need to do, or what’s best!

i also want my baby to sleep in her crib, when’s a good time to transition from bassinet to crib?

how do i get in a routine? help!!!