I think you're supposed to cut them back a bit. I've just put some of my chilli plants in the cold frame after cutting them down. Apparently you get a better crop after the first year. I've never tried it before though, I usually just compost them so we'll see how it goes!
Blend a lot of egg shells up until a near powder, as much as possible, banana skins dried and blended, mix both in with water, leave it to sit for one week outside, around 1gallon of water, add a multipurpose feed to it, then the ratio is 10/1 this will develop fruits faster. Every month feed it aspirin look up ratios online. You'll just about get fruits