breastfeeding/pumping question

I want my stepdaughter and husband to use bottle feeding as another way to bond with the baby. I want to know about how long I need to breastfeed to establish it with the baby, so s/he doesn't get confused. I know everyone and every baby is different, I just want a ball park time or how to see the signs that we're ready to add bottles in to the routine. Also anyone know good bottles to use for breastfed babies?