Actually I would attempt to restart your HTPA before jumping on TRT as TRT is a lifelong commitment with its own set of issues (sterility unless used in conjunction with hCG, management of other hormones, ie Estradiol).
Jumpstarting your system would involve trying such drugs as Clomid (see Study in “Drug Protocols section”), hCG, or Nolvadex as they act to boost endogeneous Testosterone production – but should only be done under the care of a competent Endo/Dr who knows the dosages, protocols and will monitor closely via bloodtests.
Check out some of the “Penile Rehabilition” studies and comments in the “Sexual Side Effects” subforum.
L-Arginine 2-5grams per day, low-dose Viagra before bed to promote nocturnal erections, and Horny Goat Weed (according to the boys at peyroniesforum.net ), Acetyl L-Carnitine can all be useful to help stimulate erections… which help promote oxygenated bloodflow to prevent fibrosis/shrinkage. Full-spectrum Vitamin E has been used as a frontline treatment for Peyronie’s Disease (200-400iU/day) so you may also want to consider that.
Also, if its an issue with having low Testosterone you could try some natural treatments like Maca, Tribulus, Zinc 50mg/day, Tongkat Ali (Longjack), garlic capsules (see study in Naturals section) to try and boost T naturally… in addition to heavy, consistent weight training and proper diet.
But you really need bloodtests to see what is going on with your hormones before you can evaluate next steps, wether that be bringing down a high Estrogen level or trying to boost a low Testosterone level, etc.
Check the “Recoveries” section for some info… Dr Shippen claims to have helped some men recover, in the range of 50-75% of patients… but others have tried Clomid, hCG, TRT and felt no different.
Everyone’s body and endocrine system is different so your response to medications/treatments will vary.