[KellyMD]

Sorry, I'm in need of a bit of help today. In a manga I'm reading, two friends are talking and their exchange goes as follows:

Girl 1: 彼氏ほしいい！！

Girl 2: なに急に

Girl 1: クリスマス来るじゃん！！

Girl 2: もうちょい先じゃん？

Girl 1: いやっ　そろそろ用意しとかないと
こ～～盛り上がれないってゆうか～～～

I understand everything except the last part. What is she saying exactly? My best guess would be that she's saying that if she doesn't make preparations/plans soon for Christmas she won't be able to have a good time [on Christmas], but I'm sure that's most likely wrong...

Thank you very much in advance.