Your problem was probably keeping it inside for the winter as maples require a certain period of dormancy for them to survive. In texas the colder it gets during the winter would be better for the tree as they prefer extended periods of 30 or so degree weather.

The drainage issue is very important as JMs will get root rot easily if planted too deep or in wet soil. If you don't do it now you will have to dig it up soon and get it above the surface of the clay. It is actually best to practically place the tree on top of the clay (without digging into it more than a few inches) and filling topsoil around it mounding to the side of the root ball. You must also be careful not to allow any soil or mulch to contact the trunk to prevent girdling.

I have to be honest things don't look good. But keep your fingers crossed, it might make it.

Thank you so much for your advice. I dug up the tree and put it in a slightly bigger pot than it originally came in with fresh potting soil and left it in my back yard where I want to eventually plant it. I added mulch to the top of the pot to keep it from drying out too much. I've used my moisture meter every day to check the soil and have only watered when needed. It has been about ten days since I dug it up and repotted. Most of the buds on the tree apear to be dying but yesterday a few bloomed with more tiny leaves. These leaves are about half an inch in size. I see a few more buds turning red so I have my fingers crossed and breath held. Should I fertilize the tree and if so with what?

Thanks,
Kristy

I would refrain from fertilizing right now. The tree is under great stress and the slightest innaccuracy in fertilization could push it over the edge. JMs do not generally like fertilizer when in the ground, but may need some if left in a pot for a long time. Regardless, I would hold off until at least the fall before considering fertilzer in your case.