Need tips on sleep training!

Jordan • Boy mama 💚 || Carl Anthony III & Carter-John Alexander 👨‍👩‍👦‍👦 || Feel free to chat with me 🤗
Okay so my LO is 4 months old & he currently co sleeps with us. As much as I love the little booger I want my bed back 😂 He does have a crib of his own & we're currently working on really establishing a solid night time routine. So I'm looking for some tips from mothers that are currently sleep training or have successfully done it.