FORMULA MILK

Hello mommies! My LO is 18 months. Balak ko na kasi siya pag stop sa milk kasi magwo-work na ako, EB kami since the beginning. Iniisip ko lang kung pag stop ko siya kailangan pa ba i-formula milk since di ko na siya mapapa breastfeed? Hope some can answer my question. Thank you mommies!