Sleep anxiety

Sleep anxiety. I developed sleep anxiety after have countless sleepless nights in early Jan. Turned into a spiral where I was anxious thinking about sleep. I used a sleep aid for two weeks, but it stopped helping. Every time I tried to go without I would spend all night awake. So I chose to go back onto Zoloft because i was becoming very anxious all day long. Now I'm on day 16, and I still can't sleep. Can Zoloft help resolve sleep anxiety? And has it for you?