If you want to just cut off internet for short bursts (I have to... FR is so adddiccting) you can find programs that will cut your internet off for a prerequisite amount of time or till you restart your computer (which I guarantee is a good detractor, I don’t think I’ve done it yet) . The one for the Mac is called Freedom, but I don’t use PCs, but if it is out there for the mac, it’s out there cheaper and with ten different flavors for the PC.
Good suggestion, will look around, thank you.