There is constant conversation these days about mobile first indexing because Google has said they are moving that way. However, that doesn't mean it is happening overnight. SEO Roundtable reported, "I keep getting asked if Google is now done migrating sites to the mobile first indexing process. The answer is no, there are many sites, including this one, that has not been migrated yet. Google said many times it can take years and years for it to happen." John Mueller once again took to twitter to confirm that all the sites have not been moved over. So, what do you do? Make sure that both your mobile site and your desktop site are in tip-top shape so you are covered either way.
Google: Not All Sites Were Moved Yet To Mobile First Indexing
Google said many times it can take years and years for it to happen.John Mueller from Google confirmed on Twitter again that not all sites have been migrated yet.He said "We haven't moved all sites yet, so that's not a sign of a problem if it's not moved yet.Read More