I've been making kit wines for years. I used to age and bottle it properly, now I take a lazy shortcut. I siphon it into a couple plastic juice containers and put them in the fridge leaving the rest in the 6 gallon carboy. I use up the wine gradually over a month or two. So , the wine in the carboy is exposed to oxygen as the wine level goes down, and the wine spends a few days in the plastic jug in the fridge. Am I damaging the wine by doing this or does it not have any noticeable effect on the wine? I am wondering if I could add Co2 to the carboy as I take out wine.