So your doctor should be checking your levels regularly. Also you can help
by paying attention to how the H/C makes you feel to help
your doc to work with you to work out the best dosing/timing for you.
30 mg seems a little high for replacement. But then, if it is being used therapeutically for the Lupus that's another story. But, taking it at 10pm will affect your sleep if you keep a more normal schedule. I would def bring this up with your doctor, if you are having trouble sleeping.