🍼Difficulties with Ceserean Delivery & Formula Feeding!

Hello Everyone.. I am a mother of 16 month old baby girl. I had ceserean in last year December. My baby was & is always on formula feeding, eventhough my milk production was awesome after delivery, my baby didn't accept my breastfeeding & gradually milk flow stopped.. I have struggled a lot doing formula milk whole day & night...heating water very very often!!!!! Till now I am still suffering in different ways!!!! My baby stopped eating Food, trying different ideas, we both have become weak. Sometimes now I feel like to start off Breastfeeding!! But is it possible to get Milk Flow now? My baby is already 16 months....but she has only two teeths down, that's becoz of lack of nutrition. What do I do... Please help...