I'm making an icecream cake for brothers birthday. I was putting the icecream on the first layer of cake and put it in the freezer, I couldn't finish putting the icecream on cuz it was melting, I tried putting more icecream on it 15 minutes later but it was melting all over the place. I put it in the freezer again. I think at the beginning my icecream was way too soft. How do I fix this?? Any help will be appreciated! Thanks.