Originally Posted by Gregg Bell
how do I get back to having LTS?
Unfortunately, "downgrading" is not easily possible. You'd have to reinstall as rokytnji said. I would not bother for the moment.
Right now your best bet is to do all the upgrades as they come along. Make sure that you don't click on the "upgrade to next release button" at a point in time where you need a running machine and have no time to fix potential issues. Do it at a time where you can afford spending some time on a broken system.
If something does go wrong, you can still reinstall an LTS. For the event where this happens you may already want to burn the current LTS iso on a CD. It will come in handy the day that you do break your system.