Confused !

My husband was diagnosed type 2 about 18 months ago, he is 67 years old and disabled which makes exercise difficult, he cant even walk very far unaided . He was started on Metformin but about 4 months ago, his BS was between 17 and 20 at most readings . Because of this, the nurse put him onto glyclazide , one morning one evening along with his Metformin . He quickly began to have hypos so the dose of Glyc was cut to half at night only but he still had mid morning readings of 3.2 or even 3.1 . The nurse advised cutting out the glyclazide immediately especially as he had also embarked on a very healthy eating regime and cutting down on carbs . However , this morning, despite breakfast , he suddenly began to feel shaky and his BS reading was again 3.1 . I rang our surgery, unfortunately our usual HCP was absent so I spoke to a Doctor , he told me that as long as Pauls reading was not below 3, it was not a hypo and that metformin alone could not cause a hypo and not to worry ! I am confused as I always thought that a reading below 3.5 was not desirable, but this doctor made me feel like I was worrying over nothing and being stupid . My own view is that because Paul has reduced carbs , his dose of Metformin may now be too high but the doctor poo poo`d this theory , saying that regular 3.1 or 3.2 wasn't anything to be stressed about , anyone have any views please ? Thanks for reading .

Thank you, that's very helpful , I will ring the practice on Monday morning and keep a close eye on him over the weekend .