To your question about using your time: Justin gives guidance on practice, and how much time to spend at what, at the end of each module through Grade 3. At first it’s very prescriptive, and over time he teaches us how to decide for ourselves how to allocate practice time. Follow that guidance!
Regarding theory: Justin does introduce theory concepts in his lessons when the theory adds to what he’s teaching. Here’s my experience: I like to understand the “whys” of things, so I wanted more theory. I started studying (using Justin’s paid course) around the end of Grade 1. I got a lot out of it until, I think, about the middle of Theory Grade 4. (The theory grades and guitar-lesson grades do not align.) No problem, I set theory aside for a while. Now I return to it when I feel the itch again. I continue learning episodically; my guitar skills can’t keep up with what’s being presented, and learning theory without having skills to apply it isn’t much fun for me. Finally, I’ve learned a lot by reading theory conversations here on the Community. When I don’t understand something and it seems interesting, I take a few minutes to understand part of it. I’ve accumulated a surprising amount of understading this way.
You say you struggle with having too many options (which I understand). So try to be honest with yourself and understand whether studying theory will be a distraction from learning to play guitar, in this moment, rather than a benefit. And as I said, realize that once you begin theory you may set it aside from time to time. Then before picking it up again, ask that question: is this a distraction from increasing my guitar skills.
Grades 1 and 2 of Justin’s Practical Music Theory course are free (no credit card required so no fear of forgetting to cancel before some deadline). Maybe check those out and see what you think. Also, there’s a topic in this community called something like “Tips from the official guides” that has some great theory discussions. See for example Richard’s very thorough exploration of the Circle of Fifths. That’ll keep you going for a while! Just don’t let it become a rabbit hole!