You'd only kill the plant if you did that all the time. when you water it should be so soaked it can't hold anymore and there is runoff left over that you remove. This is doing the same thing but with lots more runoff. Nutrients are in the form of salts and easily dissolve in the water and run out to reduce the amount in the soil.
It's not getting better so. I've grown hundreds of plants over the decades and had to do that plenty of times and never lost a plant doing it.
Anyway, good luck with it.