Oh, man--I can't believe they have a three month wait! Their practice is either too busy to accomodate you or (paranoid dentophobic thought) they're deliberately lengthening the wait time so as to allow decay to spread--more surface to fill means more $$ to charge.

I suppose I can see rescheduling if they'd only booked time for one filling, but could do both with one numbing shot, you know? But I'd expect a new appointment within a week, two at the most!