Balik kampung for Raya, how to avoid the jam?

KL to Kelantan Raya veteran here. The single biggest tip: leave at an odd hour, not when everyone else does. I leave around 2 to 4am the day before most people, roads empty, kids sleep in the car, and I reach before the crowd builds. Second: avoid balik on the last working day evening, that's the worst peak, everyone rushing same time. Route-wise, the Karak/East Coast Highway (LPT) is the main artery and it jams, so watch Waze/Google live and be willing to detour to the old trunk roads (Gua Musang route) if the highway is a parking lot, sometimes longer distance but keeps moving. Fill petrol and pee BEFORE the R and R, because the R and R itself will be chaos and the queue for toilet alone is 30 minutes. Bring snacks, water, power bank, and sabar. It's part of the experience lah.