Are you taking the morning meds on a full stomach?
I take pred. and hydroxycloroquine but not the other one you mentioned. I always take them with food (hard cuz I'm not a big breakfast eater). When I am on pred. I take a chewable Pepsid too - they started me on that in the hospital and I've just kept it up - and never had stomach issues.
I didn't know about calcium blocking the absorbption though - I take all the vitamins and minerals in the morning - I wonder if that's causing my meds to be less effective....? hmmm.