Breast feeding

So I'm starting to relactate cause I honestly miss that bond with my baby in previous weeks when I've mentiond it to family I've heard negetive feedback so keeping it to myself any way let me continue - my son had low blood sugar when he was born so the hospital immediately put him on formula I did breast feed but the formula became dominant and eventually my milk dried up I was being lazy and now regret it so today is day one I've heard that people start to get milk as little as a week after starting so fingers crossed