yes! I started to give FM when I wanted to wean my son off breast milk when he turned 1 yr.
So what I did was this. He was drinking 180ml of ebm then. So i mixed 170ml ebm with 10ml fm. (seems little right? but then the taste of the fm is so strong that even with 10ml, the whole milk taste so diff from EBM). let him get used to the taste. then after that when he more used to it, i increased fm to 20ml (160ebm 20fm) and then slowly increase. actually when is nearly half half, he could already accept one bott of fm by itself.
babies are smart. they know that breast milk is the best! hahah
So for your case, you intend to give full fm after 6 month? before you switch to fm, make sure you have enough ebm to last for at least 1-2 weeks to let baby accept fm first. cos it's really quite a struggle to see baby rejecting the milk cos of the taste. but then cos your baby still small, there may not be a big prob to switch. is only when they are bigger and can rem the taste that they reject fm more.