Personally I never try to let plant wilt. Although stressing a plant may make for hotter pods, it also makes for a stressed out plant that will be set back and lose valuable production. Just let you plants dry well between waterings
After a while you should be able to tell when your plants are dry just by the look or the weight of the containers.
You might want to try a looser, well drained soil, or try bottom watering. With a good "soil" its difficult to over water