How to defeat vanitas in ven's story in space?

Okay I just want to pet everyone know im at the final fight im at level 30 because I looked up wgat level i needed to be for this fight and im good on that i beat him in irl now im in the dream world where vanitas wants them to become one or something like that

So i know what to do for the rest pf the fight the problem is the part where they are fighting with light wnd darkness amd you use the stcks and shit amd I keep dying I just want to finish this fight so if there's any advice pls let me know I try looking it up but all I see is the secret boss fight which im not interested so yeah i just want to beat this brat already and start aqua's story