You can try homoeopathic medicnes for irregular treatments. It is side effect free and very much curable. Please do a scan to rule out pcod and do blood test to check for thyroid issue. Revert back for further details.

At one year age. 10 kg is app. Weight ideally. Breast feed tobe given only 2.3 times 8 hrs interval. 4 times you give cereals based soup prepred in milk or curd. That will provide adequate calories and gain in weght. More breast in late night avoided.

Take cap rabemacdsr once daily morning before breakfast empty stomach for 10 days.
Take tab cefolac-- o 200 + tab crocin advance twice daily for 10 days.
Take tab lumerax 80 mg twice daily for 3 days with milk after meals
take syrup ferikind -- m 2 tsf twice daily after meals for 15 days.