# Add these lines to your .htaccess file and upload migrating.html alongside it
<IfModule mod_rewrite.c>
RewriteEngine on
RewriteCond %{REQUEST_URI} ^(.*)?wp-login\.php(.*)$ [OR]
RewriteCond %{REQUEST_URI} ^(.*)?wp-admin/(.*)$
#RewriteCond %{REMOTE_ADDR} !^123\.123\.123\.123$ #Add your IP address here if you want to whitelist it
RewriteRule ^(.*)$ /migrating.html [R=301,L]
</IfModule>
<!DOCTYPE html>
<html>
<head>
<title>Migration in progress</title>
</head>
<body>
<h1> Migration in progress</h1>
<p>This site is currently undergoing migration to another server, and cannot be edited until migration is complete.</p>
<p>Sorry for the inconvenience and thank you for you cooperation. </p>
<p>See Roadside Dental Marketing support team for more info.</p>
</body>
</html>