Eccentrics

Do sleds or short range work for high reps and light long range quad, glute and adductor lengthening before squatting.

Lower the weight slowly to pins at full depth on the squat.

Start light and increase weight each set.

Only progress load if form is 100% and there is no joint discomfort or sensation.

Aim for 10 seconds or more with more than your current 1RM.

5-10 sets of one increasing weight each set works well for this method or clustering 5-10 singles at around 80% of maximal weight.