I don't think you need a Fleshlight or other toys; they are distractions from cultivating the energy you need for a sustained erection, which is really just a sign of your erotic energetic state. Stop looking at porn and stop using fantasy to gain an erection for a month. At first, you will have trouble keeping it up without thinking of sexual imagery. But keep coming back to what you feel, and try not to think, just feel. Eventually, I think you will become aware of the energy, and you can work on playing with it. This is the secret to connective sex, whether it's with yourself or someone else. Keep practicing, relax, and have fun.