impulse in Deck Squat

Hi

 

I can't even do a Deck Squat without getting impulse from the bottom of the movement...Should I do It until I can without much impulse or should I start with an easier progression?

Keep doing it, your form and control will improve. Also add in the necessary stretches - usually for the calves in this case.

Keep doing it. You'll make sudden improvements in technique without much rhyme or reason to it. The body is a funny thing