The price behavior on the 30 second chart doesn't allow for a similar trendline to be drawn, the best that can be done without more showing on the left side is to draw from the 8:30 low to the low between the double tops at about 8:33. That trendline get's crossed over at the first candle drop from the 2nd top and that would be the 3.
However, I'd probably be inclined to draw a trendline from the 8:30 low extending through the 8:36 low and when price crosses that line at about 8:38:30 I think that could be the 3, which is way below the neckline drawn at the middle low between the two tops.
I think one of those is wrong! How'd I do?
If the 3 (trendline) is crossed after price crosses the neckline, I'm not sure if the rules listed allow for an entry, however, taking the cross of the 3 trendline is a trade I might take, with the stop at the top the previous 30 second candle.