We have had a few members in your situation. Some describe themselves as TOFI (thin outside, fat inside) where they seem to easily put on visceral fat around organs without general weight gain - this visceral fat then impedes the functions of the liver and pancreas etc.
Some members find they can reach a weight maintenance diet which is still BG friendly by reintroducing carefully selected carbs which suit their individual metabolism and gut biome.
Others choose to introduce ‘good fats’ (often thought to be full fat dairy, oily fish, olive oil etc) to stabilise weight.
I wonder if
@SueEK might have some thoughts?
Im sure folks will be along in due course with suggestions