Jv20

I am in the west of Ireland, we certainly have had a very warm spring here. I will keep watering it anyway. Thanks

Hi all, this is a young red oak tree that was purchased from a nursery and planted in December 2020. In the last 2 months the leaf buds turned into leaves and the tree looked quite healthy, but over the last week the leaves look like they are dying - curling up, turning brown (see pics). The bark of the tree doesn't appear to have any deformities. Does anyone have any advice on how to manage this? (All leaves are within reach of pruning if required) Thanks in advance!