Betty Jones, 86 years old, had a medical history of depression, DM2- Diabetes now requiring a daily dose of Insulin

Betty Jones, 86 years old, had a medical history of depression, DM2- Diabetes now requiring a daily dose of Insulin, and Glaucoma, have nil allergies and is admitted for BGL stabilisation and acopia. Currently taking medications Metformin 500mg bd, Lantus 18 units mane, Trusopt 20mg/ml Rt eye, sertraline 100mg Daily and PRN medications Movicol mane for constipation. 1. If their bgl is 8.2 mmol/L, what should we do before administering lantus.? 2. what will happen to the after administering Lantus and does she required to take metformin after lantus? 3. What should we administer before meal, lantus or metformin? 4. Do we need to administer metformin if the patient’s bgl came down to 2.3 mmol/l after lantus?