I have a full English website at http://www.example.com and I have a Spanish version of the website at http://spanish.example.com but only about half of the English pages were translated and exist on the Spanish site.
Should I just add a sitemap to both sites with hreflang tags that point to the correct version of the page?
Is this a proper way to set this up? I was going to repeat this same process for all of the applicable URLs that exist on both versions of the website (English and Spanish).
Is it okay to have hreflang="es" or do I need to have a country code attached as well? There are many Spanish speaking countries and I don't know if I need to list them all out. For example hreflang="es-bo" (Bolivia), hreflang="es-cl" (Chile), hreflang="es-co" (Columbia), etc...
Sitemap example for English website URL:
<url><loc>http://www.example.com/</loc></url>
Sitemap example for Spanish website URL:
<url><loc>http://spanish.example.com/</loc></url>
Thanks in advance for your feedback and help!