Sleep help!

Melissa • Isaac 09/09/2016👶💙

My almost 3 year old is refusing to sleep! He wont nap anymore when we put him to bed he will just fall asleep around 3/4pm because he hasn't napped and then because we only let him have half an hour, he cries for about an hour after waking him. His wake time varies between 5am and 7 am. And bedtime is a whole different story! We do his usual routine, bath, some warm milk, bedtime story then sleep time but ever since Wednesday he will not go to sleep unless I'm sat with him. I've tried leaving the room and putting him back everytime he leaves but he gets so upset hes nearly sick. When he does fall asleep, I sneak out the room but then a couple of hoirs later, hes back up again crying for me and coming into my room and I just have to repeat the whole process over again. He went through this phase a few month ago but he grew out of it after 3 weeks but I find it so hard having to work full time waking at 5am every morning as I'm barely getting any sleep. My partner works nights also so I dont have any help. He has also started with a really bad temper, crying for no reason, throwing himself around for no reason, shouting and being bossy etc. Its like hes woken up as somebody else