Your fasting journey will be a long one just like mine because at my start my bmi was over 44!!! weighing in at 19stone at that stage I couldn't have exercised to save my life however I started small walks on each of my fastdays and doing 4:3 from day one simply because of the weight needing to shift and because I found the fastdays very easy + yes enjoyable.
Best of luck to you I'll be here to keep you company on your journey and will check out that link above as lots of my fastday meals have become meat free as veggies are more filling. Sue