40 Year old, Low T, Constantly Tired

Your T is a bit low. And you would probably benefit from higher levels. If nothing else your weight would likely be much easier to control.

Have you made sure you do not have any thyroid issues?

I assume you have read these stickies

So you should know what test results you should post here when you get them done. Generally finding a doctor who knows anything about Hormone replacement in men can be rough.