Sarah, I'm guessing it's a phase, and funnily enough Jack who is almost exactly the same age is going through something similar now to. Jack wants me to stay with him when he goes to sleep, although he will settle without me if I stay for a few minutes first. Then he is getting up in the night and coming into our bed. It started a couple of weeks ago. One theory I have is that he is waking due to the colder weather and then once he's awake, he either wants company or more warmth. I think if he wasn't waking in the first place it would be ok. Of course Tom waking in the night is probably disturbing him too.

One thing that works some of the time with Jack is to tell him that he needs to stay in his own bed until the sun comes up, then he can come and give mummy and daddy a big hug. If he comes in during the night we usually say "the sun isn't up yet sweetie, time to go back to bed" and he usually does, although sometimes one of us needs to go with him and give him a cuddle first. Other times we don't really wake up when he comes in and just wake up in the morning with Jack in bed next to us.

I'm not sure this is really helping, but I guess the best advice I can give is to make sure he's warm enough, that he knows he's secure, and that you will see him in the morning. Before that is sleep time. I am sure that like most other things it will pass quickly, unfortunately it doesn't help with the 5am wakeups in the meantime.