Hala, relatable talaga ito! Kadalasan ang babies mas madaling sabihin ang "pa" sounds kaya "papa" comes out first, hindi yan personal, it's just how their mouth works pa lang, mas natural lang sa kanila ang P sounds compared sa M. One of my mum friends' baby din ganyan, sabi ng pediatrician namin normal lang yan at eventually sasabihin niya "mama" din once mas developed na ang speech skills niya, so don't worry! In the meantime, keep talking to her, say "mama" a lot, and enjoy na lang ang "papa" phase kasi mabilis lang mawawala yan.