How to save the data entered by the user until the moment the form is submitted in Magento 2?

Question

Magento

I googled and did not find sensible help on this topic. The question is this: There are several forms in the Magento IM and none of them saves data when entered, i.e. it is necessary for the buyer to be distracted from filling out forms and everything needs to be started all over again. Is it possible to save data using magento before clicking the Submit button? I think that these should be sessions.