Format Appendices for 6x9 Paperback

I need approximately 20 pages of appendices added to my book. The pagination should retain the original 8 1/2 x 11 format for a 6 x 9 paperback.

Requirements:
- Guidance on layout and formatting adjustments to fit the 6 x 9 size.
- Text-heavy content in appendices.
- Use Times New Roman, 12-point font to match existing book style.
- Quick turnaround is essential.

Ideal Skills and Experience:
- Experience with book formatting and pagination.
- Proficient in adjusting layouts for different page sizes.
- Attention to detail and ability to maintain consistent styling.
- Strong command of typography and formatting tools.