Mobile-first Coffeeroasters Subscription Site JS with sessionStorage

This was my first intermediate project and I learned quite a bit along the way. I appreciate any support with best practices overall and strengthening my knowledge in web accessibility. In regards to accessibility, I notice that I can access my questions from tabbing through the "Create your plan" page, but I would also like to be able to tab through each question, rather than going back to the side nav to select the next plan in order to submit a response. It currently adds extra unnecessary tabbing, making the accessibility feature inefficient. Best approach to make this adjustment in Vanilla JavaScript is greatly appreciated!

Happy coding everyone! ~V