www and non-www versions indexed - duplicate content issues. Advice?

Hi all! I have commonly seen this issue and was wondering if anyone had advice.

Problem: Both the www and non-www (primary) versions of a website are indexed by Google, Bing, etc. This results in duplicate content and the site is "hidden" from search results.

Fixes:

1. 301 redirect added to .htaccess file pointing to the non-www site.
2. Non-www canonicals designated for each page/post
3. Ensure internal links all point to non-www site
4. Recrawl request via Search Console

Any other recommendations? Bing seems to totally penalize/remove duplicate pages and won't show them again despite recrawl attempts. Google is better, but the pages seem to have taken a massive hit in rankings. Thanks!

submitted by /u/maineoutcomes
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