Welcome to the forum
@mhamid25
I am sorry to hear of the complications that your boyfriend is experiencing.
It sounds like he is still using mixed insulin, and there are now much more effective management programmes available. Unfortunately many GPS are still not familiar with these as they will come across so few people with T1. It is important that he is given access to specialist diabetes care, which will be available at his local hospital. This is very different from the care at a GP practice where identified staff will have an interest in Diabetes but not the experience in managing insulin regimes.
He would benefit if he was able to switch to Mutiple daily injections, using a background insulin which deals with the glucose that his liver is releasing, and then Bolus insulin which would accompany any meal that he eats. It is more to do but enables you to keep glucose levels more steady, and this may help to prevent further complications.