Well, first, you may associate MILD with WBTB in your mind (it is very reasonable, for increased chances), so you set yourself up for waking up in the middle of the night.
Besides, if you wake up too much, you only have to stay more still when you wake up 
and do a roll over or two if needed to get your sleep back. If you’re still too awake, there are plenty of useful advices on the insomnia topic, particularly relaxation techs.