Not sleeping thru the night

Au

My baby Kayden used to sleep thru the night sooo well. Now ?? Idk who this baby is 😂 he goes to bed at 10-11pm, then wakes at 2am, 4am, and 6am. Then he’s officially up at 8:30am. Every time he wakes up, he wants to be latched on and he wants to co-sleep. Someone give me some advice on how to get him back in his crib at night and this horrible sleeping pattern !!! Lol