Hello,
That's understadable, it is the least obvious moment in exploration of the whole game. After that, it becomes again quite clear how to progress. There is no skill issue in the critical path: if you see that you can perform a jump, you can go there indeed. The only really difficult platforming moment to accomplish is the sequence break and of course it is not mandatory at all.
Please see the image. Go to the red circle, accesing from the right, to get the next ability.
I kindly encourage you to finish the game. You still have some nice mechanics to discover; I think you will appreciate particularly the last one, and the Boss battle.
Hope you have the time!
Cheers
