Ayaw na magbottle feed ni LO

May same case ba sakin dito na si LO is formula fed then suddenly ayaw na nya and mas gusto na nya ng breastfeed. Undersupplier ako, but then after i breastfed LO nakakatulog na sya. Diko tuloy masabi if nabusog ba si LO or not. What you did po if same tayo ng situation? My LO is going to her 4th month this week.