The Sixers were tired. You could see it in their defensive blunders, unforced turnovers, and Joel Embiid, who was only effective at the free-throw line. It makes sense. The Sixers had just one day of rest following their dramatic 109-100 Game 7 win against the Boston Celtics in the previous round on Saturday. Meanwhile, the New York Knicks enjoyed three days off, and it showed Monday. Philadelphia suffered a 137-98 loss to New York in Game 1 of the Eastern Conference Semifinals, falling 1-0 in the series. While fatigue was a factor, the Sixers schematically struggled and must adapt to knot the series in Game 2 on Wednesday. The Sixers proved they can adjust and stay resilient after the Celtics blew them out in Game 1 of their first-round series. Now they have to do so once more. Here are three adjustments Nick Nurse and company could make. Switching the scheme against Jalen Brunson Jalen Brunson torched the Sixers in the playoffs two years ago. That trend continued on Monday night.…