MailChimp Integration Question

I’m having an issue with the integration with Mailchimp.  I was able to setup an automation with zapier that automatically adds anyone who books a call through HoneyBook to my email list. The only problem is HoneyBook’s formatting doesn’t integrate well with MailChimp.  MailChimp uses first name and last name as seperate blocks, and the only option in HoneyBook is first and last name in one block.  As a result, Mailchimp only saves the first name and email address.  Now I have to go into mailchimp and add the last name manually for every new contact, which defeats the purpose of having it automated.  Would it be possible to have the option to make the first and last name seperate blocks? It would be nice to have that option.