Got it. I’m aware of the Robots.txt option, but also making sure that if there is a possibility to include it in the index, then try that out.
Reason – We’ve submitted the other sitemaps via Search Console, but the number of pages indexed v/s submitted is showing a difference. So, the assumption is that this might be happening because the sitemap is not included in the index (therefore, less weightage).
Will add the sitemap to Robots.txt but would love to see an option where the Sitemap Index can be edited.
Thanks