The sleep issues are normal. There is a big difference between fatigue and sleepy (although I can be very sleepy and unable to sleep). As I mentioned in another post. this is very common.
I too had an issue of weight gain. Almost 40 lbs in a 6 month period and that was long before steroids or even a diagnosis. You must remember that Lupus is different for everyone. Although there are general answers there is non"one size fits all". It attacks is all differently