Google "Creep feed", The problem with feeding is the gut bacteria change with the feed. The Deer having to reset their guts constantly is bad for them. The second reason it is bad, is that when they gather disease and parasite transmission is higher. Feed them off the ground, though by now it is probably too late. Feeding them close to home is just plain dumb, rodents show up and proliferate. The ground becomes saturated with parasites.
I only feed them when the temperature gets down to single digits for weeks, to give the younguns a little help.