I planted a young apricot tree last summer in my yard in central MI. It is in a location with a good 8+ hours of sun. I did bury my dog under the tree soon after it was planted. It produced a few apricots late last summer. This year, it still has hardly any leaves on it. The leaves it has look healthy, but you have to get right next to it to see them, as they are so few and small. Any ideas what's going on?