Frequency beats one big blast
The repeated bout effect means muscles get much less sore once they see a movement regularly. Training legs twice a week with half the volume each time cuts soreness far more than one giant weekly session.
Train legs more often with less per session, cut the deep stretch overload, and stop leaving weeks between leg days.
Brutal soreness every leg day usually means you train legs too rarely and slam them with huge volume when you do. Split your leg volume across two sessions a week so each is smaller, and your legs adapt and stop getting wrecked. Ease off the most soreness inducing moves like deep Bulgarian split squats and heavy eccentrics for a few weeks, warm up properly, and keep protein and sleep high.
The repeated bout effect means muscles get much less sore once they see a movement regularly. Training legs twice a week with half the volume each time cuts soreness far more than one giant weekly session.
Exercises loading the muscle in a deep stretch, like deep squats, walking lunges, and slow negatives, drive the most DOMS. Reduce those temporarily, then reintroduce them gradually as your legs toughen up.
Warm up thoroughly, keep moving on off days with light walking to boost blood flow, and hit 1.6 to 2.2 g protein per kg with enough sleep. These shorten how long soreness lasts.
If leg pain is sharp, one sided, comes with swelling, or the muscle feels rock hard and severely painful, see a doctor to rule out injury rather than normal soreness.
Train legs more often with less per session, cut the deep stretch overload, and stop leaving weeks between leg days.