A form with 13 steps.

Hi Everyone,

New here but have been working with Nintex in the past. Have been away from nintex for almost 2 years. Now i have a new form and just need some ideas as to how to run the workflow. Basically I have 13 steps. Each step needs to be completed before next step starts. I need to email people on each step but limit the emails to 1 even though users can come in and edit the form. Once a step is put in a complete status using a SharePoint dropdown list. Now i was going to just build a long "runIf" and check if the step is "comeplete" and check if email has been sent by using a field with a yes no status

However I'm sure there are better ways of doing this??? Any ideas?

Also my form is just a long form with 13 sections.. if there is a neater way that is simple i would love to know. The design could be better but i just want to keep it as simple as possible

Thank you

J