I had to make the jacket smaller as I seem to have shrunk quite a bit doing the low carb eating - the way I make the garment is in two halves, starting at the cuffs and joining centre back, and so by separating the two halves I could take rows out of the backs, join up again and then put on a new collar. The fronts overlap a bit more than before, but the side seams are not half way to my elbows now.
I was rather pleased to find that Asda have a really low carb bread - under 8 percent carbs - ordinary breads are so much higher. It is expensive, but as it is so low carb it seems worth it.