The only thing I can suggest is: weight yourself at the same time every day, in the same clothes, on the same scale, in the same state. So I weighed myself daily until I got comfortable with the pattern: unclothed, after getting up, before consuming anything as soon as I could see the scale clearly! LOL!

While fluctuation is common, establishing a baseline weight will give you better grounding in how much you actually weigh. And you’ll understand short-term fluctuations more clearly as they relate to your lifestyle.

So for example, after breakfast weights I noted would generally be about 0.4~0.5kgs heavier. I stopped weighing myself after lunch, unless curiosity got the better of me. I was also able to track weight loss more effectively which in itself became a virtuous cycle.