Sugar levels are too high. Some energy?

Hello I want to ask for my mother she is 61 weight 86 height 5’2 , she was hospitalised on 2 dec due to DKA(diabetic ketoacidosis) kidney infection and was in ICU for 5 days and overall 9 days to get recovered , doctor treated her with antibiotics and dialysis was skipped in hospital, now as she is at home she is feeling very weak and walk barely 500/600 steps a day , she is on renal diet and potassium and sodium intake is very less , her sugar level is too high fasting (400) pp(500+) , she is taking eurepa 0.5 for diabetes earlier she was taking diapride m2 forte which is changed by the doctor at hospital , eurepa is somehow not making any changes for her sugar levels , so need an advise if medication needs to be changed or insulin injections are required to bring level downs? Also need to know if we can increase protein count for her so that she will get some energy ???