Hi, I had gone through your query and understood your concerns.
Dear sir,
Metformin helps in reducing weight. that's what happened in your case in the beginning. Now regarding diet follow the guidelines.
* Avoid single high concentrated meals.
* Small frequent meals more times in a day.
* Food high in fibre content like vegetables, whole pulses, fruits, etc.
Take more
* Salads (cucumber, tomato, onion, raddish, salad leaves).
* Vegetables (cabbage, baigan, lady fingers, french beans, methi, palak).
* Fruits (except banana, chockoo or mangoes).
* Sprouted beans and pulses.
* Marie biscuit (with less sugar).
* Clear soups, Lemon juice, Buttermilk .
Hope this guides you,
Thank you.