How to connect a Zoho CRM specific value (Lead source field) with a Mailchimp specific list

How to connect a Zoho CRM specific value (Lead source field) with a Mailchimp specific list

Hi there,

I know that there are more than 1 ways to connect Zoho CRM with Mailchimp (free zoho plugin, zapier, other paid addons).
Until now I connect my Zoho CRM with the Mailchimp using the Zapier.
When I create a new lead (in general) then automatically this one goes to a specific Mailchimp list.

I would like to make this connection more specific (and this is something that I cannot do it using Zapier). 
In the Zoho Lead Source field I have 2 options 'Website', 'Chat'.
I would like when the new Lead has the Lead source option 'Website' to send this lead to the 'Website' Maichimp list.
When the new lead has the option 'Chat' to send it to 'Chat' Mailchimp list.
Which is the best way to do it?