Just as important as Testosterone is your Estrogen level. Called Estriol on your blood test. Have it checked. Estrogen makes fat in men as well as secondary female sex characteristics. Fat enhances estrogen. The two work together like Bonnie and Clyde. Ask your doc about taking Arimidex. It will lower your estrogen, at the same time ask him to allow you to conduct weekly injections of test. The patches and lotions etc really do not work.
There is a website called T Nation or similar. There are alot of educated people there on HRT, Hormone Replacement Therapy.
Can you work? Yes for the most part, unless you need to think quickly and clearly, like a fireman at a burning building. Brain fogginess is the problem.