Totally fine at over a year. We have weaned BF and not replaced it, except to offer a sippy of cows milk at breakfast and supper - he'll take an oz or so at most. We have milk on cereal, plenty of cheese/yoghurt and other sources of calcium so besides the immunity/bonding benefits of breastfeeding there is no nutritional need to continue feeds that you don't want to continue. Milk is a drink from age one, primary nutrition should come from food
. But that said, keep up your breastfeeding relationship as long as you both want!!