Change the frequency of Time Capsule backup by editing the following le with your text editor of choice
/System/Library/LaunchDaemons/com.apple.backupd-auto.plist
And looking for the section
<key>StartInterval</key>
<integer>3600</integer>
The value 3600 specifies the backup interval in seconds (i.e. 1 hour). Change this value to whatever you see fit – I have changed it to 14400 (or 4 hours).
Needless to say, proceed with caution when editing you Mac’s system settings, and if you do mess up it’s nothing to do with me, right?