Natural Leg Extension mastery

Hey guys,

working through SLS progressions and ive hit a wall at the natural leg extensions. I can do 5x10 Skater squats but the iM is wrecking me. How far down am I supposed to get on these before progressing?

 

This is about all i can get before my hips collapse into flexion, it feels like hardly any range of motion to me. This is definitely a quad tightness restriction imo. Should i continue to stay at this level or move on in the SLS progression and just keep working on these?

HI Daniel, for the mastery aim for 45- 60° past the vertical.

for long terms goal aim to reach the floor.