Hi, I already asked the question on different places. But so far nobody could help me. 
Hope someone can help me out. If possible.
I migrated my website https://vihara.nl to https://meditatieinstituut.nl and lost about 80% traffic (see printscreens). It's over more than a month ago now and there is no sign of getting it back up. Maybe there is nothing to do and
1. I have to be patient and traffic comes back in a few months. 
or
2. There is nothing to do and I've lost everything I've build up in the last years. Start over again to get the rankings back.
or maybe, maybe
3. I just forgot something that I still need to do to get the rankings back up. Or there is something I did not think of... This is done: The website is migrated 1 on 1. No changes in content, url, code, etc. Everything is exactly the same as on the previous domain. 301 redirects whole domain (via htaccess a bulk redirect). All the old pages, without exceptions, lead to the exact new page. The new domain is running from CDN (Cloudflare) with the same settings as the previous domain. SSL is installed in the exact same way. Domain migration set up in Search console (working). Uploaded new sitemap (working). Updated internal links. Changed the most important external links (where I could get contact after reaching out) In meanwhile received some new external links and also posted new content Anybody knows what to do? Or do I just have to be more patient and will it come back in a few months by itself? Looking forward to suggetions. Thanks! Gerjan Migratie-Meditatie-Instituut-2048x786.jpg verloop-sinds-de-start-2048x355.jpg