I’m not sure if the following ideas qualify as segulos but i do know that they work….
#1 Let shadchanim (professional and non professional) know that you trully appreciate the ridiculous amount of time, effort and dedication that it takes to get even one date off the ground. Let them know that you are commited to compensating them for that. (Each person would decide what is appropriate compenstion for the result of getting to a date #2/date #4.)
This works plain and pashut, it has been tested will fantastic results…