I've been practicing with a demo account for about a month now with a system that I made. It seemed like my edge was fine until I switched from the usual timeframe (10min) to 15min. Now, it would seem like my edge has gone. I've lost 6 trades in a row with the same signals that I was using before, the same way. Out of 20 trades, W - 8, L - 12. Has this happened to you? Did you just stick with it? Or what