Hello and welcome – First of all, getting your levels stable is critical. In addition, making sure that you are practicing good “sleep hygiene” is important (for example, trying to go to bed and wake around the same time every day, giving yourself a break from electronics right before bedtime, avoiding alcohol/caffeine late in the day, etc.)
If that doesn’t help, you might consider talking to you primary care provider regarding a sleep study to see if that can shed any additional light on the issue.