
The status of CS2 skins cannot be changed. The assumption that a skin's condition deteriorates over time is incorrect. Skins permanently retain the condition assigned to them when they were created, obtained from a chest, or acquired through a Trade Up Contract.
Here's how the states work in detail
When creating the skin, the skin is given a Float Value assigned. This value then determines the skin's condition, where 0 indicates no wear at all and 1 indicates a great deal of scratches and other signs of wear. Depending on the float value, the Status of the skin assigned, as shown in the image below:

So you can rest assured and keep playing your skins. Their status won't change unless you have a StatTrak Counter, ...that one will, of course, count toward the total.