To replace many similar objects with fillable form boxes

Hey, Thank you for all the help! 🙂

An example screenshot is attached.

I have a .PDF with hundreds of pages and this is an excercise book which includes many dotted lines as objects (not recognized as simple images, but maybe some vector images???). So it looks like this:

Blablablablabla ..................... blablablabla ........... blablabla.........

Blabla ..................... blabla ...........................blabla ........... blablabla

Blablablablablabla ..................... blablablablablablabla

And I'd like to replace the dotted lines (objects) with fillable form boxes. But when I select one of these dotted lines = objects inside of Acrobat it only let's me to edit it in Illustrator or other software but I can't replace them all with fillable form boxes.

I know Acrobat has a built-in form maker / recognizer but that's just didn't work on my .PDF so I'm searching for a real solution. Acrobat couldn't recognize these dotted lines = objects and couln't replace them with fillable form boxes.

As I said this is an excercise book which I'm trying to turn to a little interactive = fillable form.

It would be cool to have a chance to add and set requirements (if the correct English words typed into a formbox or not...... Like it could give a sign to the user as a correction) to the form boxes with some script like some batch action or something but that's another level.... I'd be glad if I could replace the dotted parts with fillable form boxes.

Thank you for all the help! 🙂

An example screenshot is attached.