It's a decent idea. Invest time in one game, then sleep for 3 days.

What other options are there? Start playing in the morning and continue until the end. Everyone will be warned before the tournament that this is what awaits them in case of a game on an 8mm6a map. + there will be no incentive to rush through the entire map. It's like in tennis - with a weaker opponent than you, it makes sense to play a 3-set match, because over the distance, the chance of losing is even smaller, but only fatigue can accumulate before the next match. Strategy, damn it.