The remaining quota for Gemini 3.1 Pro is at 80%, yet it still requires 5 days to refresh

I have an active Google One subscription. Today, I used the Gemini 3.0 Pro model for work purposes. I didn’t use Plan Mode and only had a single conversation.

However, I noticed my Gemini 3.0 Pro quota still has 80% remaining, yet it shows it will take 5 days to refresh completely.

Is this normal behavior? And why does the quota take such a long time to reset even with most of the allowance unused?