@aliali For me, the problem is most often simply that I have so many nighttime bathroom calls. That really disrupts my sleep. When I am anxious about something that causes me to have problems getting to sleep also, so when I have both of those I wake up exhausted. I generally get up, do whatever such as dressing, having breakfast, and my fatigue is generally relieved to an extent that I can continue with my day. On the days when I get up and find myself continuing to really drag, and almost feel woozy from inadequate sleep, I go back and take a nap. If I go two or three nights with inadequate sleep I have a tiny prescription of lorazepam (my PCP gives me about 10, lowest dosage, pills a year!) and I will take one. That does help.
There are things that can help with sleep but if you are getting enough sleep then your problem is entirely different. I do occasionally use Benadryl (the generic labeled as a sleep aid) or 3mg of melatonin. I do not like to use anything too regularly though because everything is habit forming.