The scale in general will fluctuate. How much protein are you eating? Try and give an example of you daily food intake, plus try not to weigh everyday...I know its hard not to and I myself do because curiosity wins every time....How do you know your not in ketosis? Sometimes it can take a week or longer to transition into ketosis. If using keto sticks..sometimes they are not accurate.

Hang in there
Happy low-carbing