Vidoska, you sound just like me. I am exhausted all the time and get attacks of shaking and extreme weakness. I don't know about you but I get that whenever I go to the bathroom, makes me really weak afterwards and I feel like I am going to faint, it's like having my insides move around is just too much exercise to deal with. Sometimes I also get the shaking/weakness attacks out of nowhere and I have to sit down for about 10 minutes before I can function again.
You mentioned you are sleeping badly and waking up every couple hours, I get that from the prednisone and I wonder if maybe that's what is making it difficult for you to stay asleep also. It seems to help a little to keep myself as cold as possible, I have the heat only at 55 degrees and have a fan blowing on me and I don't wake up as often as I used to.