If you didn't pick up earlier, it's best to wait until after 4:30 to see how things go.

If by 4:30 it’s still declining, you’d better not buy in.

If you’re not tired, you can wait until 8 o'clock when the daily chart changes to take a look.

If it’s still declining, don’t buy in, wait until after 9 to 10 in the morning to consider buying more.

Don’t wait for a 4-hour bullish engulfing (bullish engulfing a bearish), at the very least wait for a 1-hour level bullish engulfing before entering, otherwise you won't even be able to set a stop loss.

Still, don’t panic or feel anxious; in a bull market, there will be more spikes.