Entrepreneur Question

I have just watched all the Entrepreneur videos and THANK YOU!!!! Couldn’t be more impressed with content and value here.
I am ready to do my 10 year plan and have a quick question. I have had a coaching business for a little over two years. Should I do my 10 year plan starting now (my year 3) and build out the next 7? Or should I create it as if this is my first year and map out 10?
Thank you!