First of all, relax. Seriously, it's amazing how much stress goes away when you declare yourself 'not part of that system'. Even if you want to enter the system later, let go of it for now.
Second, work with your DD on how they like to learn best. They may not even know at this point, but you can experiment with it. Take a class? Watch a lecture? Online learning? Project based? Unschool? Try something and if it doesn't work let it go. No stress.
For example, I know that unschooling is very popular, but DD hates the idea. She loves to be taught and the process of learning/teaching. She loves the dynamic of a classroom at her level.
If your DD takes off though you need to be aware of making the integration into regular school problem worse. Two years into homeschooling, and our DD is now working 2-3 years ahead. It's like at least two years gain for every year. There's no way we can rejoin the system now.