12.5 is a low side dose. It might help to go higher rather than split.
You may be on long term steroids with slow taper in store.
Take Vitamins D and ask about
osteoporosis prevention if you are at risk. Know you lab numbers as well as
symptoms. Check your BP weekly.
Chronic systemic inflammation also
May alter our cardiovascular risk so
ask about an evaluation. I was border line diabetic and checked glucose at home. Mediterranean diet is worth considering. Prednisone is manageable when we are proactive.