Stock and variation of a product

Hello,
I have a product that has 10 of TOTAL stock.
My variations of this product should have a specific unit value:
Variation 1 = 1 unit
Variation 2 = 3 units
Variation 3 = 5 units

The problem is that currently I can put a stock with a variation that can make it exceed the total stock.
It is necessary that the variations can be taken so that at the most their unit make 10 at the accumulation.

How can I do that?

Thank you and have a nice day