I guess you can use the "3 Second Rule"
"The "3 seconds rule" was coined by Mystery (more info at MysteryMethod.com), a PUA and regular poster on ASF. The point of the 3s rule is to propel you to approach women fast enough to keep your internal voice from talking you out of it and avoid hesitation. You do not want a woman to see you hesitate. The longer you hesitate, the more insecure and sappy you appear. Also, hesitation creates an added sense of nervousness to your mental state - a personality trait you do not want to portray when approaching women."
"The "3 seconds rule" was coined by Mystery (more info at MysteryMethod.com), a PUA and regular poster on ASF. The point of the 3s rule is to propel you to approach women fast enough to keep your internal voice from talking you out of it and avoid hesitation. You do not want a woman to see you hesitate. The longer you hesitate, the more insecure and sappy you appear. Also, hesitation creates an added sense of nervousness to your mental state - a personality trait you do not want to portray when approaching women."