Sleeping in pack and play

Baleigh
Hey moms, I was wondering what your newborn sleeps in? My little man just turned 2 months and he still prefers his swing chair over anything. He will take naps throughout the day in his pack and play but not as long as he sleeps for in his swing and he won't sleep in the pack and play at night. Any suggestions to help him get used to sleeping in his pack? 
Thanks in advance :)