I request that we get a re-work of the new hold breath system

Change the hold breath mechanic so the cooldown before you can hold your breath again changes depending on how long you held your breath for. In my idea the time you held your breath for should be rounded by 3
My formula:
Cooldown = round to 0.5( held_time ÷ 3 )

The current black vignette does a terrible job of displaying the current status of the hold breath. How it should work in unison to this new idea would be so when holding your breath the vignette slowly crawls to the centre of the screen like it does now however when you stop holding breath, it should retreat from your screen at the same pace of the cooldown so you know the exact time that you can hold your breath again.