One thing I know about citrus is that the stem that comes out from the nodes are called "Suckers" because they take too much energy and stays in vegetative for too long! If you see any growing, I do suggest you cutting them, to focus on the main stem.
This seems to be a clone from a good tree. Some citrus take 10 years to give the first fruit!
I wish you a great grow!! The leafs and flowers smell wonderful !!!
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