Alhamdulillah, that's already a great start lah! My girl also took few ounces then wanted boob after, so totally normal, at least your little one isn't rejecting the bottle completely, which is honestly half the battle. Just keep offering it consistently, maybe try different times of day or different teats if dia really tidak mau, and don't stress if progress is slow, you've got almost 8 months to go, plenty of time before 2 tahun.