Since you started trt have you come off like this in the past? If so did you recover fast? Did you usually recover fast after past cycles?
Your thoughts will be confirmed in the next few months but to me it just sounds like you have recovered really quickly. It's completely possible just very rare especially when guys have been on so long. Sometimes when I come completely off my sex drive is much higher too. Although with me it's simply due to the hormones still being present but lowering over time. I tend not to come off completely for that long as it's more just a mental break from everything (usually 3-6 weeks). In fact the first week I start injecting again my sex drive always goes down. That transition is basically my body going wtf is happening