How do I get it to record when I'm actually asleep and only when I'm asleep?

[Momsthoughts]

For some reason, the sleep app continues to register that I'm awake and counts it against my sleep time. YES I'M AWAKE. IM ON MYPHONE! CHECKING APPS. 

THEN... it's subtracted from my sleep score.

Conversely I'll be up for 2hrs. It will sometimes show I'm sleeping. 

How do I get it to record when I'm actually asleep and only when I'm asleep? 

It used to do this, the whole algorithm/format was changed in an update and turned it into useless garbage.