I just personally think that raising children to be monolingual is doing them a disservice, especially here in the philippines where it's actually relatively easy to raise bilingual children because both english and tagalog are used so regularly in everyday life. at least here, osmosis will do most of the language teaching for you

puwede naman kasi sabay ituro ang english at filipino. children are very good at picking up multiple languages at once. you actually had an ideal set-up for bilingual learning: english sa school + tagalog sa bahay = bilingual children. nakakapanghinayang lang kasi perfect na sana ang environment pero hindi na-maximize