Quote from Invertex;992238:
Jump smash spam might work. If you're using Pillar, you'll be able to absorb shock during it (I think) and it hits high enough to enable breakoffs.
After a bit of testing, I think you can also absorb during the jump animation. The thing about jump smash for me though (Might just be me) is that it never seems to be able to trigger the break, maybe it's because of the critical chance or damage or what.