Hey mama! Mixed feeding usually means your period comes back faster than pure breastfeeding, a lot of my friends who bottle-fed alongside nursing got theirs back around 2-3 months postpartum, but honestly it varies talaga, some took longer pa. The combination ng formula at breastmilk makes it harder to fully suppress ovulation, kaya mas maagap ang return ng period compared sa exclusive breastfeeding moms. Just watch out kasi you can get pregnant again even before you see your first period, so better talk to your OB during your checkup about family planning options na safe if you're still nursing.