Hi, I'm a grade 6/7 guitarist and bassist. I started playing guitar at 14 and bass at 16, and I'm 18 now. I have never had a practice routine, but my formal education has been music focused, with a music GCSE and an A-level equivalent diploma in music performance and production. If you're looking at learning guitar, here are my bits of advice.
To be honest, what got me going was learning songs and knowing how to read tabs. Tabs are super easy, I promise, there's bound to be videos on it and after that you can get going with learning songs on sites like songsterr or using tab videos on YouTube.
At the same time, I would recommend looking up spider walking on guitar and alternate picking. You can practice alternate picking in the songs you're practicing, and try use that four finger movement in spider walking in learning songs too. No rush to do this if you're not at least 50% ish comfortable with both at a moderate speed.
Those should get you going quite quickly for your first things to learn, just keep in mind that what you're able to play for the time being will be limited, so it might be hard to find the motivation to get going at first. Just remember, at some point, you will be able to play the songs you want with practice, and one day you'll be able to write songs that are so much more complex.
Also, you'll need to look at theory sometime soon after your first couple of songs. Scales are great to look at if you want to start songwriting as you'll be able to understand what notes are where and what key you want to write in.
Break a leg! I'm open for DMs if you have any questions.