I am growing cherries - fruit starts to set but then stops growing when it is really small. We have had lots of chill and there were heaps of blossom and bees?
Cherry Fruit Not Setting
Certified GKH Gardening Expert
If it stops growing when it is small, it is likely a pollination issue. Most sweet cherry trees are not self pollinating, so you need two in order to get fruit. I would recommend getting another variety of cherry and planting it nearby. This should clear up the issue.