Sorry, please try this link instead to see picture.

Here is a link that might be useful: {{gwi:389965}}

That doesn't look like a 30 year old plant. There is no branching. It is very small. Also it is planted very close to the house. That may be a problem since it should develop into a bush. In any case, stake it up. Tie it loosely so the ties don't girdle it. Water it whenever it is wilted early in the morning. It is normal to wilt in the heat of the day. But only want if it is still wilted early in the morning.

If it struggles, cut back the top but leave some leaves to feed the roots. Cutting back to 6 inch stumps is for big robust healthy specimens, not little a skinny one like you have with damaged roots.

Watch for signs of chlorosis. If the new leaves become yellow with green veins, then it is chlorotic. That usually means that in is not acidic enough. If your soil is too alkaline, you will need to move the plant into a raised bed with acidic soil. If your soil is not too alkaline, you can just apply sulfur to increase the acidity and explained in the reference below.

Here is a link that might be useful: How to care for rhododendrons and azaleas.