all right.
first things first. DO NOT PANIC! i don't see anything serious based on your description, however let's get a few things clarified.
- frog has not eaten for 2,5 week and that is a main concern
- you took him to the vet and all she had to say after reading book is that is calcium deficiency. were there any tests, x rays done? what solution have you used as per recommendation and how did it look like?
- ca/vit, how often, what are you using exactly?

we really really need to see a frog and its enclosure.

now, the only thing that really screams is your temps - 70 at night is way way too low, you should have 76-78 night, 80-82 day, that might be a reason along with humidity for frog not eating, it might think it is winter time. so i would start with increasing humidity to 76 if you have hydrotherm and correct temps and after you clarify things we might suggest doing something more. also - you don't have to feed mice, but variety is very beneficial.

heat lamps are excellent, i use only them as a heating source for all my frogs, plugged into hydrotherm they always fine tune temps and fogger does the same for humidity.

edit- why are you using your heat lamp on a timer, and not plugged into hydrotherm?