Napping tips

My son is about 6 1/2 months old and hasn’t been to daycare yet. I’m a teacher and after my maternity leave, my mom came to watch my son until I was on summer break. We developed the bad habit of letting him sleep on us after eating. We start daycare in 4 1/2 weeks and I’m trying to break this habit. Any tips?

He currently naps around 10:00 - he will nap in the car, on a walk, or after eating at this time. In the afternoon, it’s usually between 1-3 that he naps but that’s usually always after eating.