This kind of strategy doesn't work, just gonna say it. The problem with overbought/oversold oscillators is that you never know if the asset is actually overbought/oversold or if there's still more demand/supply left (you'd call this trending).
Believe me I coded a dozen of these simple strategies and tweaked them endlessly. In some periods they work great, but that's just because those periods have lots of sideways movement, price going back-and-forth across the VWAP. You'll get caught in a trend too many times.