This style of form is aggravating to fill out, but kudos on making it beautiful.
If you want to be kind to your users, allow them to scroll through the entire form, see it on one screen and ideally skip ahead without filling out required options but block submission.
I suppose for me it kind of matters how many questions are being asked. I'm fine with this UX if it's a specific question or two, but for a whole questionnaire with 14 questions or more, then I'd also prefer to be able to get an overview first.
I want to see what I'm getting my self in for so that companies/entities can't trick me into filling out a questionnaire with 50 questions in that, "Will only take a minute!" It's easy to get people to get answer enough questions that they reach the point that stopping now would mean everything they've just done is a waste of their time, so they keep going. It's abusive.
Give me everything up front and let me decide if I have the time to commit to that.
You can actually have more than one form field within the same slide. I haven't made that very obvious, but one of the advantages here compared to Typeform is the flexibility.
If you want to be kind to your users, allow them to scroll through the entire form, see it on one screen and ideally skip ahead without filling out required options but block submission.