Also, Bar FWIW, I have been given 8 SC's prior to DCC and six after in one month.
I generally do not fly a lot in those months, but they do hit the max. It is all luck either way. It depends on your SC time and what trips pop up. Sometimes you get nailed some times you sit for days on end.

Also, the 767 has some very short, short calls to. I have been give many with less than 1 hr to departure. They ask and I laugh. I do not live in a camper in the parking lot.