Substantial gains can be had with your current dosing if you train & eat correctly. More isn't necessarily better. I'd get your training & diet in line first and coast where you are for awhile longer. Learn what your new found body is capable of before you start adding testosterone without any discipline behind it. While I do the occasional blast, I've been on your same TRT dose for >7 years and continue to find new strength & improvements when I make adjustments to my diet & training...