I'm not an expert but if you're on short trading, you set your candle time into 1 or 5 minutes. I usually rely on MACD, RSI and Volume, I am using a custom one that tells you if it is already at buy/sell zone. Also, I am looking at the history of the prices of the coin I wanted to buy. Look at the previous highs (not the pumped ones with sudden spikes) and that should give you a good hint. I practice taking profit as low as 2% per trade as it is easier to hit small profits from 2%-5% that waiting for the top.