I’m not sure if this will work, but now that projects are able to have more than 1 form maybe your first branch would redirect them to a new form?
I sometimes create forms, and use the multi-select title & description to redirect people elsewhere (I do not create any options for them to select).
It will look like this when you create it:
And then like this for the end user:
There will still be a submit button, but it has worked for me in the past.