Practice needs both more and less movement at the same time to reach the end goal

DO
1 roll within one exhale.
1 roll within two exhales.
1 roll within three exhales.
1 roll within four exhales.
This gives you more awareness to each point of the roll and allow you to EVOLVE it with awareness instead of tension.
DO next
1 roll within one exhale.
2 roll within one exhale.
3 roll within one exhale.
4 roll within one exhale.
5 roll within one exhale.
6 roll within one exhale.
This gives you more presence within the same exhale to do more with the same resource.
You already have all the tension you need. All you need to do is to let go.