Okay, I know what your problem is, but after that you have done it with ‘Number List”, you can choose in the menu Paragraph styles at the right corner menu item for: convert number list to text.

So what you can do is that you make a Paragraph style with ‘List’ and a duplicate with ‘List nr 1’
Type for example: a enter, b enter, c enter and give this the paragraph ‘List’. Everything is now numbered from 1,2,3 etc. I guess you have an blanc enter between your next numbered list, what has to begin with 1. again. So you have to make another paragraph ‘Body’ without all the numbering issues.
Then type the example again: a enter, b enter, c enter and give this the ‘List nr 1’ and that is now numbered as 4, 5, 6 so now you put your cursor in the alinea where nr 1 has to be shown and then right click on the text and choose ‘restart numbering’. Now you see a ‘+’ in the Paragraphstyle because you edited it’s original code, but that is what we want, so now you choose in the right corner of the Paragraph menu ‘Redefine style’.

I don’t know how the book’s layout is, but with the find and GREP function you kan do a lot of automatic layout. And when you’re finished you can choose cover number ‘list’ to text

In de InDesign preferences you have another option for the scaling options, maybe that’s an option.
Nice thing I often use is that you kan give an measurement inside the …% value. Type for instance ‘100 mm’ or ‘2″‘, just handy ;-)