I am sorry for this delayed reply to your gardening question. The spring rush has brought a deluge of questions and we are working hard to catch up!
It sounds like you are doing all you can to help the tree. Just make sure you are not ovewatering and keeping the roots soggy wet as that can causes the symptoms you are describing. It should not be necessary to water more than once a week.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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