Ayaw ng formula ni baby

Hi. Ask ko lang po ano ba magandang gawin if si baby ayaw mag formula milk? I tried promil & Pediasure. I also tried different kinds of bottle nipples pero ayaw pa din nya. Pero kapag water nilalagay umiinom sya, kapag milk nakalagay ayaw nya. What to do? Im planning to go back to work na kasi. EBF here. #advicepls #pleasehelp #1stimemom #firstbaby