What is the best affordable formula milk?

Ano po kaya magandang formula milk for baby yung affordable sana, im on my 36weeks and 2 days pregnant.. Balak ko sya imix formula and breastmilk dahil need ko na tumulong mag work after 6 mos sana pahinga, sobrang hirap kc pag d sanay ung baby mag dede sa bote.. 😔 #advicepls #pleasehelp #forbaby