Faster way to reach this grub using wall cling storage. Doing a full height jump against the wall here gives wcs. You can either choose to line yourself up before the full jump, or just go for it straight away. Faster strat saves about 2.5 seconds while the easier one saves 1.5 over the cdash from the left wall.
You'll want to be neutral while falling past the wall and it will automatically push you away from it as you reach the bottom of it. Once you get pushed away you can dash left and do the pogo.