I think this approach is fine. I must say having been doing this for years, treating hundreds and thousands of men I have been underwhelmed with the results with topicals. Injections can cause peaks and valley and I have many younger men inject twice a week that smooths out the peaks and valleys. I think it is appropriate to follow the advice of your primary doctor and endocrinologist. I have just seen too many men spend months or years with gels with sub optimal results. Many men are diagnosed with depression and are not really depressed (I have no idea if this applies to you), but the presumed depression is base dupon low T.
My recommendation would be to pursue this but if a few months pass and results are modest consider another approach. Pellets are one approach to have smooth levels of T and are placed every 4 months.
AndroGel (testosterone) for Hypogonadism, Male: "I am 33 was tested and had low t my results were 39 which is extremely low. I started on androgel two pumps made me very aggressive and I would snap and get angry so I went to 1 pump in the morning my sex drive went through the roof :) . After 6 wks I was tested the results were 432 that was exciting I also gained 15pounds I use to weigh 140 now I'm staying between 150-156 I am stronger more energy can think better but I do have my days that suck it's all part of the test now not everyone is going to have results like mine so keep trying to find what it is that works also if your eating poorly that maybe the reason also try to eat healthy and workout"
As men and women age their testosterone levels diminish. Testosterone is known as the Hormone of Desire . In middle-aged men, low testosterone symptoms (Low T) or Andropause start to appear. Some of the most profound symptoms of low testosterone are - feeling extremely tired all day, unexpected weight gain especially increased belly fat, loss of muscle or muscles getting flabby, low sex drive or a complete lack of desire, softer erections or complete erectile dysfunction, inability to sleep or outright insomnia, memory and hair loss, bursts of anger, social withdrawal and depression.