I did not find it as hard as that. I did it once by going under the carb limit (think it was 20g) for a couple of days eating things like bacon, eggs, avocado, steaks, oil dressing salads etc and was using strips to check for some keytones. Admittedly wasn’t trying to go long term as I don’t know how healthy my diet was but I definitely noticed some of the saiety and weight loss benefits claimed so I don’t think these so called “pop keto” people are necessarily deluded if they get reults.