I agree with the diet thing - have a look at it and see if there is anything in there that effects you - ie makes you regular or gives you wind.

For me, I have had to give up bananas The best fruit for on the go handy breakfast or snacks - but as soon as I cut them out Zander settled better - I had one the other day otherwise I wouldn't get a chance to eat with school etc - and he had a bad night. Co-incidence? Maybe, but I won't take the risk again at the moment!

Have you tilted the cot/mattress where he sleeps so he is slightly head above feet etc?

Good luck - that is hard work so you are doing a great job even being awake