This is a really good idea for a thread, and since no one has posted anything yet, I guess I'll share a tip that has really helped me:
Take breaks, and don't feel bad about it. Especially if you're not really feeling it. Don't force yourself to reach your daily goal in one sitting.
1667 words in one sitting is definitely doable, but it's still a lot. If you don't feel like writing then go do something else for a bit and come back to it.
Also breaking things down just makes it 1667 words per day feel so much more attainable. Like, saying "I'm going to write 500 words, three times a day," it sounds a lot less daunting than "I'm going to write 1667 words a day."
And don't forget to take care of yourselves too! Staying up til 3am to work on your project may feel good in the moment, but you're probably going to regret it the next day.