Update useForm() after XHR request

Good afternoon,

I'm building a CMS with Inertiajs (Vuejs 3) and Laravel where I'd like to support multi-language, so I have this language switch in my header. This switch is using the Link component, which performs a XHR request to update the page props, which works fine. In a form I use the useForm hook which does not seem to update when the page props change, how would one make the useForm hook reactive?

Thanks in advance.