ACF Multistep is an add-on to ACF Form Builder plugin, which will allow you to turn the very long form into the Multistep on your demand.
ACF Multistep work both with/without ACF Form Builder, as long as you have ACF plugin there, then you can use this to break your inputs in backend into the steps too (without submitting form button).
The images below will show you all the feature that ACF Multistep do:
That’s the result of settings here:
To config the ACF Multistep, you can follow this instruction: ACF Multistep – Full documentation