Same with me, Ill try not to have afternoon nap, do lots of activities till time for bedtime. Sometimes Ill have hot tea or milo, alternatively hot/warm shower then put on essential oils before going bed. I cant deny this time of pregnancy I do wake up middle night but after 30 to 45 mins ill dose off again. But there are times it will be hours. I watch youtube, play video games to keep my eyes tired. I am currently on 3rd trimester.