Sleeping problem

I have a new problem in Bakun. Its sleep problem. Back in KL, sleeping time is always late, sometime as late as 2am in the morning. It all depends on Akid and Maisarah. As long as they are wide awake, I cannot sleep. Sleeping at 1am or 2am, waking up at 5.30m means I only sleep about 3.5 to 4.5 hrs everyday. Here in Bakun, the babies are not with me. Also, here in Bakun, by 10pm, its already late as it gets dark by 6.30 pm. Therefore, by 10pm or 11pm, I'm already in bed. The problem is, after 3.5 to 4.5 hrs of sleep, at about 3 or 4am, I tend to wake up. After that, I couldn't sleep anymore. This happens everyday. My body is functioning like in KL. I toss and toss in bed but I still cannot fall asleep.