That’s quite a lot, and losing that much weight every season takes a lot of effort. I’d probably focus on strategies to stop yo-yoing that much.
I usually gain about 3–3.5 kg around Xmas time and New Year. It takes me 2–3 months to get rid of that. I could lose weight faster, but then it’d get uncomfortable. This time I was a bit too ambitious and one week I had trouble sleeping as I was famished. Still, losing 3 kg is much easier than 4 times that.