This is the sequence of events: 1) I made a one page site, using crappy wordpress theme from the wordpress repository 2) I built links to it 3) after a while, it started ranking page 2 4) I had a theme cusom made by upwork freelancers 5) I uploaded the new theme, copy/pasted the homepage content from the old site to the new site 6) I added 50 more pages to the site 7) The next time google came around and crawled the site, it tanked. I am not sure if it's due to the theme or the additional pages. 8) This was a few months ago and it's never recovered. 9) I suspect it's due to the theme. Maybe the freelancers are retarded and the theme has errors, I don't know how to check though. Now I bought a theme from themeforest which has a lot of good reviews. I don't have any of the content saved in Microsoft Word or anywhere else on my computer. What's the procedure that you recommend for changing the theme with no downtime? automated solutions won't work because this is a custom theme.