Yes, i´m on same “issue”.
For what i understand, there´s a bug between the quota limits you see on the antigravity model screen and the real consumption.
But since nobody from google is saying anything, no documentation, nobody understand what those quota limits are in real. Becauise there´s a lot of people having this problem or similar.
For example, last week, every time, randomly, my quotas goes from 100% to 20%, then to 100% again, then to 20% again, … even without doing anything.
Today in fact, sudenly my quotas goes down to 20%, and just a moment ago, goes again to 100%, but i didn´t use it at all!!
Also using just 3.5 medium in my case, since i can´t select low model, another bug.
In another hand, you can see the limits usage under Gemini Limits, and there you see other % diferent too.
So, i don´t know what´s going on.