There is no definitive research evidence regarding effectiveness of shockwave therapy if it actually works. Most large studies have shown SWT results in zero or only small improvements in ED. Often, out-of-pocket costs may be high. Also, there is a lot of misinformation and advertising on SWT especially by self-proclaimed or underqualified sexologists. If you still vouch for it, 5-6 sessions needed over a period of 3 months and there is no data regarding long term benefits of same.
Next Steps
Consult a Urologist (MCh Urosurgery) preferably in a reputed multispeciality government hospital or medical college for other viable non-pharmacological treatment.
Health Tips
Eating more of salads, fruits, nuts and less of high calorie food items like rice, potatoes, and those made out of rice/wheat flour and potatoes. Exercise daily at least for 45 minutes. Kegel exercises helps to an extent. Weight reduction and dietary modification helps a lot.