Convert a Canva PDF to Fillable Form?

I know this was ages ago, and you might have already got it sorted; but if you haven't, here's the best video (and I've watched lots of them)  about making fillable Canva PDF's  by Jet Sy: https://www.youtube.com/watch?v=zVyfRTckDqA 

It does use DocHub instead of Adobe Acrobat to create the fields, but it's way more intuitive and easier if you've already designed your PDF in Canva.

#1. Accessibility has nothing to do with fillable forms. This is a different issue.

#2. Why would you think Acrobat would automatically add fields to the TOC? There is no reason to have fillable fields here. It did it because the automatic form field recognition is poor. If the form is not specifically formatted to make things easy for auto-field recognition, and even then, you'll have to add fields manaully. At a minimum you'll have to rename the fields and add other properties so the fields are usable. 

@cjlantier_ if you copy a previous text field or duplicate a text field, you can double-click on that, and a pop-up dialog box will open, Text Field Properties. In the first tab is General. If you change the Name and Tooltip say Day 4, it will be dedicated for Day 4 only. Repeat for Day 5 and so on. 
Acrobat sometimes struggles to create interactive forms in PDFs if it can't find the fields. Or maybe Canva's PDF creation process can sometimes interfere with Acrobat's form recognition, preventing it from properly adding form fields?

Nevertheless, it will be a painful experience by doing it by hand! Good luck! 

@cjlantier_ you likely will need to manually add those text fields by hand, one by one.