3% stoploss is too small, it's a small compare to correction wave, it will reach your stoploss point. Then you will lose the opportunity to profit. In my opinion, there are two principles with stoploss and take profit:
1.Stoploss minimum at 10% when the market goes downtrend, or there are hint of decline.
2. Never take profit when coin is rising, Determining the peak is more difficult than bottoming. Only sell when the market shows signs of decline, the volume 24h peak and the coin starts falling 10% from the peak