Some of the things I've been reading about Keto, and the youtubes I've watched, recommend eliminating all cheese from your diet, while other readings/videos do not, and some actually recommend eating certain kinds of cheeses for Keto. (I have also seen sources where they recommend drinking copious amounts of water every day, but then you have to have a lot of time available to keep visiting the bathroom repeatedly, all day long.)
There are some different schools of thought on cheese. This website: dietdoctor.com has a lot of good information on low carb and Keto. You do need to drink a lot of water, that is true.