Don't open the cover until the light goes out.
I am trying to rewrite the above sentence I created without using "until". My examples are as follows:
- Don't open the cover all the time (that) the light illuminates.
- Don't open the cover during the time (that) the light illuminates.
Which sentence is correct or better? As far as I searched, it seems they differ a little and "all the time" sounds unnatural to my case. "While" may be most appropriate, but I want to avoid using "while" for some reasons.