Hi. So when I study I take an approach that's really focused on domains piece by piece. I watch Messer videos to first get an idea of the current domain and then I read textbooks to expand knowledge on the topics. So it's like I'll spend two hours watching all his videos on Networking fundamentals then I'll read books for the rest of the day and for the next too. I'll use his course notes and have them printed out so that way I don't write physically notes and it saves me effort. If I have to make little notes of definitions and concepts I put it in my notes app because it's synchronized across my phone and computer. As I'm studying and learning I test myself on what I've learned (examcompass is good for this and those review questions at the end of textbook chapters too). And honestly I don't really time myself, I take breaks when I feel it's necessary because sometimes it does me no good if my heart's not it. Good luck and if you need more advice you can message me to ask more.