One of the downsides of being on HCG long term is leydig cells desensitization sadly.
Personally I would drop the HCG all together, unless you’re trying to conceive right now.
I would also try adding stuff that will help with 5AR activity.
I think the data we have so far points in the direction that 5AR is not working as intended (low CNS DHT/Allopregnanolone with high T/Progesterone). Atleast in specific tissues like the brain.
I have had good results with libido and mood from Creatine 5g/day, which I believe is from extra DHT (lost a lot of hair). And I see you had some success with DHT cream before.
Also I would add some kind of Progesterone supplement and try to keep the serum level at 0.1-0.2 nmol/L. It is a important hormone for male sexuality and neuroprotective.
Just my 0.05$.