Looking at your weight and height, Metformin
is a very good option. Even the dose of Januvia
is not optimum in you. The optimum dose is 100 mg. Dose reduction is required only in kidney failure.
Metformin and Januvia is an excellent combination. Helps to lose weight too.
The current increase in blood glucose
may be secondary to your stress from high Blood pressure
. Please do not worry. It may settle down in due course.
Regarding optimising your diabetic medicines , you will have to discuss with your GP.