I have recently planted a Montmorency cherry tree from a nursery. It was potted, about 7 ft tall, and had around 3 dozen leaves already. Since I have planted it, about 3-4 weeks now, there only remains about 12 healthy looking leaves. The rest have yellowed and dried up. I have read about transplant shock and this seems a lot like that but I want to know if I should be concerned. Is it normal to have a smaller number of leaves in the first year? Most of the dead leaves died quickly after planting and the good ones have remained green. I also did a 'scratch' test and it appears healthy otherwise. Any further guidance or expectation for this first year would be appreciated.