How long to recover from ED using mindfulness

I’m curious to hear how long it has taken people to recover from ED and if these techniques have worked? I get performance anxiety that builds up over the course of a day or more when I know I might have sex. I feel pressure to perform as myself and my partner are trying for a baby so when I need to get it up and finish at a specific time of the month etc. I lose it and can’t which is proving very difficult and stressful.