When you started WW, you didn't know it all - you took one day at a time, and learnt as you went along. One day, a while later, you probably realised that WW was second nature, so it became part of your routine and your habit.
Just the same here - no-one, least of all yourself, should expect you to know SW plans as well as you know WW from the outset. You will learn, you will pick it up, and hell, you will make mistakes, but you *will* learn it, and one day, you will realise that SW is second nature, and that you can't remember how many points in a banana ...
The biggest habit we all have to change is our faith in ourselves - if you want to do this, you will do this. Give yourself time to learn, and don't beat yourself up if you find learning this new skill tricky - learning a new skill is never easy, but you will get there with determination and patience.