Your hips need to be flexed at a 90 degree angle, together with the knees bent.
If you have an desk job right now, wherever it may be, just consider how much time you will be going to sitting down all day, every day, for this year, next year and and much more. https://medium.com/@muscleandjointcare/cbd-for-joint-pain-the-ultimate-solution-b3904337ad81