Please tell me how to store and cook with sesame oil.

My mother-in-law sent me 2 liters of sesame oil.

Send it filled up in a 2-liter bottled water.

I'm worried about how to divide and store this.

I don't really eat perilla oil much.

The kids refuse, and I also don't feel well ;;

I'm thinking of going to Daiso first to buy an oil bottle and divide the contents.

There are mixed opinions on whether it is okay to store it in the refrigerator according to internet searches.

My mother-in-law says to store some in the refrigerator and some in the freezer. Is that okay?

I should eat as quickly as possible.

What should I make to eat? ㅠㅠ?