Zend certified PHP/Magento developer

How to get customer details before the shipping step in Magento 2 checkout?

I am modifying my Magento 2 checkout, today I have 3 steps in my checkout: Identification, Shipping and Payment.

I need to get the customer details in the first step, which would be name, phone and email. This way I wouldn’t need the billing address form in the last step.