Hey, welcome to the world of Blender!
The first thing I’d ask is: Are you enjoying it? - if you are, then great! Keep doing what you’re already doing.
It’s very easy with Blender to try and dive right into the deep end, only to forget that you can’t swim, and you’ve forgotten your arm bands. Of course, for some people, this method works just fine too - so it really is up to you.
You can learn an awful lot from tutorials, and as I started with, if you’re happy doing that for the time being, then don’t be in any rush to stop. There’s no clock, so to speak.
You’ll probably know when you’re ready to do more, when the tutorials start becoming easier. When shortkeys, and tools etc… become easier to remember, and you find yourself following the tutorial less and less.
Of course, there is absolutely nothing stopping you from starting your own projects now, and learning as you go. Just realise that, if you need help, or look for a tutorial, there might not be a specific thing to help, and you’ll have to use ideas as a basis - If that makes sense.
So really, it’s entirely up to you, and what you are comfortable with. There is no right or wrong answer here.