Multi-step form wizard UI with collapsible tabs for appointments

I preferred using a concept of collapsible wizard steps in the appointment request form in my last project..

What are your thoughts about this concept? Do you think that there are better ways to design this UI?

View the full case study and a live XD prototype preview on Behance:
https://www.behance.net/gallery/99695209/AlrevHair-Website-Design