I am also on metformin 2000mg a day, I was only put onto Basil /Bolus about a month ago, after the diabetes team finally realised that I was not type two. I am still in the early stages of getting everything dialled in, but currently on 8 units of (Levemir) and (Novorapid) basil carb ratio of 1:15g. Have an appointment to see my diabetes specialist nurse on Friday, so hoping to make further adjustments to get my levels a bit better. Current morning readings 9mmol, the Novorapid brings me down to starting levels, just by the next meal or slightly above, so find that I climb steadily all day as they suggested not giving correction doses until I was above 10. Annoyingly she said not to take insulin with any food after evening meal, so bolus is struggling to bring back levels before breakfast. Hoping for an easy fix, but as I have come to know nothing about diabetes is easy.
Not had any hypos on insulin yet, but lots of Hypers, so now only testing pre-meal or if I don't feel right, to avoid feeling depressed about high numbers 2 hours post meal. I don't think I am insulin resistant, but diabetic team just wanted me to remain on metformin.