Trimix injection good or bad idea?

59 years old. prostatectomy just over 3 months ago. Take daily 5mg tadalafil or 100mg sildenafil before intercourse . Successful only 2 times without vac pump. I am considering Trimix injections just not sure when or if I should. I would appreciate some insight from men who have used and when they started. No other treatments for cancer needed. Presently cancer free. 0 psa 2 blood test so far. I am thankful for what I have just want the best I can achieve. Thank you for any shared experiences good or bad.