There’s no official statement regarding this and you can just do a border bounce and return immediately. However we know that some border points make up their own rules and demands that foreigners doing border bounce on their own need to spend minimum one -some two- nights out before they can re-enter. As I’m aware of the Nong Khai border is ok, but a border closer to Chang Mai demands two nights. I don’t have any overview here, that’s why I would have used a professional company my self. They know the name of the game and wouldn’t bring you unless they sure they can get another extension on your behalf.
Sorry, the only extension available for Non O is one year extension of Stay, unless you’re married Thai or have a Thai child and can apply for the 60 days extension visiting Thai family. Only tourist visa and visa extension gives possibility to apply for the 30 days tourist extension.
You’re also entitled to a 60 days visa exemption, and both a tourist visa and a visa exemption needs to be extended with additional 30 days at your local immigration and both give 90 days in total.
You can do another land border bounce. The restrictions of two is lifted, but personally I would have chosen to use a professional land border transport company if you’ve already done several this year.