Yes, to migrate some of your accounts to Zoho Mail, you can use the Split Delivery option.
When you have some of your accounts in Zoho Mail and other accounts on the other server, you can configure the Split Delivery option. When this option is configured, the emails that arrive at the accounts existing in Zoho will be delivered in Zoho. When an email arrives at an account that does not exist in Zoho, it will be redirected to the selected destination server, instead of bouncing back the email.
Learn more on configuring split delivery
here.