Really depends on baby and if u want to exclusively bottle feed. For babies who hve no problem latching, LCs would advise to establish breastfeeding first for the first 3 months, if u are gg to combo feed (bottle and breastfeed). But if u're gg to exclusively bottle feed, can start anytime.
you can start a month before sending her to infant care
I started one month before entering IFC
I'll try after 1 - 2 month