While moving to a forum is a must needed move - I think starting off with all these subforums could be a mistake. Subforums are needed, but at the moment probably not sub-subforums, if you know what I mean. In my experience starting a new board with too many little headings stifles growth and makes things confusing for new users. I’ve found it’s better to have fewer larger areas and then if necessary break these down as the site grows organically. With keto, one question could cover a range of topics e.g. medical, insulin, fasting etc and would benefit from being in a more generalised section.
So in short, less sub forums, more chat!
Great work though guys, I wish you all the best.