I’m not sure if this will work but let’s give it a try. I know how to do it with one text box, you have three so my thought is to do the same steps three different times and changing the margin set up.
1. on the master page set up the margins to match your first text box. Then auto flow your text starting with the first page. If you don’t know how to auto flow, It’s when you hold the shift key when you drop the text on the page. If you see a red + showing overset text then you didn’t auto flow. No worries, simply click the red + which will load the text to your pointer tool. Click the pointer tool in the next text box while holding the shift key. Here is an article on auto flow text
https://creativepro.com/autoflow-text-when-pasting.php
2. For the next text box, repeat setting up margins on master page to match position of your second text box.
3. Repeat for third text box.
Good luck!
Melanie
in Louisiana
