One thing gardening will teach you is "patients".

You can't force plant material in general. Yes you can give it more nutrients, increase N and such but it's best to read your plants and be there to support, not push. When the plant/tree goes into a reproductive mode it tends to put foliage and root production on the back burner. That stresses the (newly planted) tree, big time.
Having said that, now is the time to stop fertilizing any citrus especially as far north as OK.
Good luck!