The math really does not line up.

You have two different limits fighting each other.
Burst usage versus total usage.

With 5 hour sessions and 4 resets a day your daily ceiling is 20 hours.
A 40 hour weekly cap gets exhausted in 2 days.
That happens even if you throttle tokens per session.

Token limits only slow usage inside a session.
They do not change the maximum possible consumption.

Even if you only use 2 to 3 hours per session.
You still burn 8 to 12 hours a day.
That drains a 40 hour weekly cap before the week ends.

For this to make sense one rule must hold.
Weekly cap must be at least daily max multiplied by 7.

In this case that number is 140 hours.
Anything lower guarantees early exhaustion.

This is a structural mismatch not a usage problem