First of all, gorgeous pic of your grandson and yes grandkids keep you positive; tired, but positive!
Big sympathy about the effects of oral steroids. They do have an impact upon skin thickness. Not sure if they affect the collagen and also muscle fibres, but my experience after taking 10mg per day of prednisalone for over two years was that, initially, the next two years was pretty awful with veins very apparent and easy red purple bruises caused with the slightest of knocks.
However, now that I am totally off the oral steroids my skin, amazingly, seems to be thicker so that I can't see the veins and am able to take a knock or two without the awful purple bruise flares.
I eat lots of iron rich food to include brightly coloured vegetables; broccoli, carrots and cabbage to name a few, plus meat, steak and lamb, and eggs.
The body needs easily available protein when under stress.
Lightly cooked and brightly coloured vegetables helps the body to absorb iron from heavy duty protein food.
Finally, Diprobase is the most fantastic heavy duty, but lightweight moisturiser.