Filling in details during checkout

Please, is there any way to do this in the shopping cart process, if I fill in the customer information, then leave the default shipping and payment method, then the order cannot be sent until I exit the customer information fields.

You mean you don't press the button to save customer details, and you don't trigger the auto save on blur? And therefore you are unable to checkout until saved? And you wish to have these details on the previous page that shows the shopping cart?

Yes, if I can set it so that my data is automatically saved, I mean the option where I don't use login, but shop as a guest, so that I don't have to use the save button, but after entering it, I can already complete the order.