Implementing Error Messaging in Formly Multi-Step Forms

I’m trying a Formly/Relume multi-step form. However, the client wants any required fields to show an error e.g. red border around the fields and perhaps an error message, when a user tries to move forward or submit (rather than the buttons just being inactive). That makes sense, and what forms usually do. Is there a way to do that with the Formly forms? I tried some code unsuccessfully. The buttons being inactive until all required fields are filled in isn’t helping from what I gather, but I’d like to keep that functionality as it’s nice to have both ways to indicate form completeness (and it might be a requirement for Formly form working?). Can you help Vimalan ? https://preview.webflow.com/preview/kasinopoulos-65582e?utm_medium=preview_link&utm_so[…]&pageId=66ed9d030344f08758f0b441&locale=en&workflow=preview