Did you see? It can't really drop down, just touched the position during the day and it went back up $ETH

A long position strategy can be prepared for a pullback at $ETH 1620-1640, $BTC 6.2-6.24 range to buy the first batch of bottom positions. After the pullback ends, continue to take off. If it continues to decline and pulls back again, add positions to average down. Overthinking is useless; just enter the market first. If caught in a trap, then deal with it.