Haaka milk storage question.

So my milk came in yesterday and I used my haaka for the first time and holy crap! I was shocked my how much milk i caught off the opposite breast while I was feeding. I made a rookie mistake though and leaned too far and knocked it off and lost majority of it on my shirt 😭😭😭 BUT, how can I store this? It’s not a huge amount yet, and I’d hate to waste a bag for a couple ounces every time. Can I store it in the fridge and add to it throughout the day then freeze it once it’s full or close to full? Maybe this is a stupid question, I don’t know 😂🤷🏻‍♀️