I'm experiencing same bad dates this past week or two. I don't follow up. If they want to proceed, they will. I've signed up parents who took weeks to decide and risked losing spot. It's a slow game at times. And others I've had sign up immediately at first interview. I don't blame the ones that take forever - it's a tough decision leaving a child with basically a stranger.
I find September spots almost harder than other months to fill as there's so many openings at centres etc. Apparently the family that interviewed yesterday are dropping deposit off this week. I'll see. I keep advertising till it clears the bank and signed contract in my hands.