Not really - sorry not helpful I know but I think it's just one of those things. Wise people say it's your body getting ready for all those late night feeds! I try some days to stay awake all day so I am dead tired by bedtime. Other days I just sleep when I can .ie during DD's nap so I figure at least I am getting some sleep.

Maybe the tea isn't helping? Look at what you're eating a few hours before - if I have any lollies or chocolate then I'm a gonner!