I've been on several courses of prednisone and all seem different. I'm on the highest oral (75 mg now) before I taper tomorrow, when I find out what my doctor suggests.
This course I definitely have insomnia, over do all day, pass out early evening (basically konk out), sleep 2 hours then awake and alert again. I'm hungry but when I eat food doesn't taste all that good, might have gained a couple of pounds, have moon face, definitely weak and exhausted at times, others almost boundless energy, water retention, and maybe the most annoying has been claw hand, when one hand or another just cramps for no apparent reason.
So in my experience, each course is different. Hopefully things will improve as you taper.
Good luck and enjoy the part when you're feeling good!