I have the same problem, I am 78 had type 2 diabetes for about 30 years. Recently diagnosed with Atrial Fibrillation and put onto digoxin and edoxaban. I used to use 58 to 60 units of insulin each day and have kept my Hbaic under 7 since diagnosed.
I now fimd I need to use at least 85 units of insulin and have increased my metformin from 2000 to 2500. to keep my morning readings below 7.
I have also found that my Gl reading is higher in the morning than at bedtime which is a bit worrying because I do not eat after 7.00pm.
Spoke to Doc last week and he is not alarmed but I am a little concerned
Any advice would be appreciated