I have a 17 month old son who is a good sleeper however lately he has been waking at 5-5:30am in the mornings and will not resettle (I have spent ages patting him on the back to no avail). He goes to bed at 7pm and has a 2 hour nap about midday every day. Nothing about his routine has changed. I am worried that he is not getting enough sleep during a 24 hour period now as he is only getting about 10.5 hours overnight. I am also 6 weeks pregnant with number 2 so it is getting very tiring! In your experience is this likely to be just a phase and do you have any advice for this age group to get him to sleep in a bit longer?