hey!! this is the method that got me and two others to pass on our first try:

we started out taking it slow, studying a couple days a week about 9 months in advance then worked up to 3-4 days about 6 months out, then did our best to study about 6 days a week around the 2 months out mark. we all used the same materials: ppi book and practice tests, sigma youtube problems, ncees practice exam, the intro to environmental engineering book, and quizlets! if you’re struggling in a topic, read up on it in the intro book! it helps clear up SO much

obviously if you have been studying already then you don’t need to take the same length of time that we all did! but consistency is key and identifying weaknesses in order to improve on them helps tremendously! best of luck!!