Baby sleeps in FP Rock and Play Auto Rocker

Kayla ✨ • 26 🌹🌻 Boy Mom x2! Married 💍
Hey Moms, so my son is 3 months old & currently sleeps in a fisher price rock and play at an incline, this model actually rocks by itself. He sleeps 4-7 hours eats and sleeps for 2-4 more. So my question is, I've tried transitioning him into a pack n play but he woke up every hour. What are some ways to transition him to sleep longer in the pack and play?