Trouble sleeping

Hi, my 15 month old baby boy wakes every 2hrs of a night for boob. He is fine during the day, even goes to daycare 2 days a week with no worries, as soon as he gets home he cries for me and boob. I have tried aromatherapy, dummy, bottle ect to divert him but he us stubborn. I tried nuropen thinking it might be pain but it only makes him more hyperactive. He goes to bed at 5pm (yes I know it's early), trust me I've tried to keep him up but he screams murder to go to bed at 5pm. Then at 4am he's up and thinks why isn't everyone else awake. Help me out mum's I need fresh minds as mine is sleep deprived, many thanks