Sleep help!

Courtnie

My husband and I are both teachers, and we start school in three weeks. Our dec 2020 baby is our second child and has been sleeping in our bed at night. (No judging, I know it’s not the safest way, but it worked for us) Anyway… we need to get better sleep with school starting again and I have decided to move him to his own crib in his room. He naps in there throughout the day but when it comes to night time, he is up every 2 hours. It’s exhausting and I need tips or tricks on how to get him to sleep longer stretched. My first born move to his own bed around this same time and would wake up once through the night, and at a year slept through the entire night. I feel like he was way easier to sleep train than this one. Any advise helps! Thanks!