@EL_xWatcher1234x
Makoto thought she could only use wings of the saint two or three more times after she was spamming it the whole fight.and even then he turns out to be wrong as she uses it more than a few times even before the High Water Spirit upgrade.
She says right there in those scans that every attack he did activated wings of the saint and she gained greater resistance and defense every time they activated.
So, as I said, any limit she has with it is unquantifiably high and would only even be achievablly reached if you can activate them with every attack you do.