Help! 4 year old sleeping issues

Hello moms! Need some advice! My son is 4 years old turning 5 in October. He has co slept with us most of his life, I got him his own bed for in his room when he was 3 but he didn’t like it so he’s continued to sleep with us. I put him to sleep in his bed in his room at night and he always wakes up a few hours later and comes to my bed, so I’ve been taking him back to his room a few times a night but he just keeps waking up! I’m so tired!! I need help! Anyone have any advice??