I personally drop to a 3 man rotation moving my #4 to LRA and #5 usually to rest. Or a SP1, SP2, 3A and 3B, if my 3rd and 4th are close...
I up each pull rating by 1 unless I have a weak bullpen, in which I would leave it as it was in the regular season. Depending on their stamina and durability I usually drop both minumium and max pitch count by 5-10 pitches after their 1st start of each series, then bump them to the max for win or go home situations(especially if they are an Ace).