Welcome.
Check, and then check again, culture, watering soil drainage. The tree may be in some kind of shock, so keep it out of direct sun and heat for a few weeks, then gradually introduce it to sunnier conditions. Don't over water and don't over-fertilize. Make sure the soil is free draining. Keep the root zone cool/shady until tree picks up. And, don't worry too much. Early morning sun is OK, but not the afternoon broiling heat. Let the tree recover.
I think next month you will be very surprised at how much your tree has grown. Check into the forum, often, and let us know about the condition of the tree.
Good luck.
Frank