1 months old baby

Question: my baby is 1 and a half month old.. her birthweight was 2.5 kgs, I was breastfeeding her but then her weight gradually decreased to 1.8 so I started giving her formula.. her weights 2.7 now. I want to go back to exclusive breastfeeding.. tried everything possible but she refuses to suck.. any suggestions?

1 Answers
Question
Answer: have you consulted doctor before giving ur baby a formula?