Apple tree has few leaves but growing fruit

Hi Folks,
My dwarf Fuji apple tree has few leaves on it this year. I live in Oakland CA, (I actually live in Fruitvale, aptly named).
The tree is producing fruit, is about 7 feet tall and has maybe 20 apples on it. Some of the branches have no leaves while other have a bushel of leave at the end. The tree seems healthy but I'm worried about the lack of leaves and growth. What should I check for? Attached are some photos.

It looks pretty happy to me. I would keep an eye on it and maybe remove a few apples if it ever looks like it needs it, otherwise, I would leave it be.

It looks OK to me, but taking some apples off now would probably help the others. It might also help you to get more apples tomorrow.

I don’t think it is a problem yet, but I would take those tags off.