I am kinda in the same boat as you are buddy. Studied for about 2 and a half months but got a 647. I think I didn't go too much in-depth on the objectives and maybe just relied on simple notes. I tried some of the Jason Dion practice tests but failed most of them. So right now Im using this book

https://www.amazon.com/CompTIA-Network-Practice-Tests-N10-007-ebook/dp/B07CFPZXH6

that someone here on Reddit recommended. It has questions pretty close to the wording of the actual exam so it makes me be a bit of attention to detail. It has questions that hyper focuses on each of the objectives. If you purchase this book and get 50% of the practice questions wrong on each section thats completely fine as the answers in the back of the book go really into the details on why this or that is right or wrong. You learn much more than before. I certainly recommended it.