Is Lachen and Lachung doable in the last week of December?

Is Visiting Lachen and Lachung in the Last Week of December Feasible?

Planning a North Sikkim trip around Christmas and weighing whether to include both Lachen and Lachung. Key sights on the radar are Gurudongmar Lake, Yumthang Valley, and Zero Point. Acknowledging that December weather can bring snowfall and varying road conditions, I’m seeking insights based on personal experiences. Any practical tips or considerations for travel during this period would be greatly appreciated. Thanks!