Unless the effort is well-circumscribed and short ("we will work an extra day the next three weekends"), congratulations, you are on a death march. It is not g

Unless the effort is well-circumscribed and short ("we will work an extra day the next three weekends"), congratulations, you are on a death march. It is not going to change. We know that it's the worst possible way to run a project. We know long hours are actively damaging to cognitive capacity, introducing extra potential for errors and reducing overall output. Well, OK, if you were in a position of power, it could change, because you could say "Nope. Not doing that". Short of that? You can try convincing management that it's the worst possible idea, and they need to either cut scope or move the deadline. This will likely not work, because there's ego invested. So... do look for that new job, just in case. And get out before you're completely burned out. (And if you can resist at all, make sure you limit your hours to something reasonable. You'll likely start excelling others by week 2)