I think the pitch count matters, other things like DHing don't matter is much, but most important is the rest and what works for them, but it's hard to know that.
Steven Matz: "Day after your start is a little toss, next day is long-toss. Next day is touch and feel (10-15 pitches). Next day bullpen. Day off. Pitch."
Noah Syndergaard:"Now I don’t even throw the day after my start, that’s just a day I where I don’t even pick up a ball. It seems that everyone preserves the sanctity of the two days running up to the start. I always do side, day off, pitch."
They are opposite approaches but they work, so it should be about the individual, but take into account pitch counts, and how often games are because for HS those strategies don't apply as well.