HELP‼ my 13 month old keeps getting up in the middle of the night! He will wake up for 3 hours at a…

HELP‼️ my 13 month old keeps getting up in the middle of the night! He will wake up for 3 hours at a time and he thinks it's so funny, he cracks up laughing everytime I lay him down, give him a bottle, or change him.. I have tried letting him cry but he gets these high pitched screams and I can just let him scream in my apartment at 3 am.. This is crazy. I feel like I have tried everything! Any advice plz and thanks !!