Bioavailable testosterone levels going down despite dose being increased?

Hello,

So I've been on TRT for almost a year now. I take Delatestryl injections subcutaneously twice a week. My bioavailable testosterone was 6.5 nmol/L back in January, so my family doctor and I decided that the dose should be increased cause I wasn't feeling as well as I wanted to be and my body fat percentage wasn't decreasing.

So we did a small increase in dose to increase my testosterone levels, but he was being mindful of my FSH/LH levels as well. So fastforward 3 months later and I repeated my blood work and my bioavailable testosterone actually went down 5.6 nmol/L! I could actually suspect that was the case cause I wasn't feeling much different and had no changes to my body composition (maybe slight increase in body fat?)

What happened here? I'm still taking the same frequency but just an increased dose. How did my levels drop? My bioavailable testosterone is now pretty close to where it was pre-TRT. Did my testicles completely.shut off? How screwed am I? I go see my family MD next week, but any info will help settle my mind. Thank you so much