Update Button, replace with on instant cell update (like airtable mode)

Update Button, replace with on instant cell update (like airtable mode)

Hello
I have a property management app i am designing, and the PROPERTIES FORM which is the biggest form (more than 50 fields), when you want to update .
First you need to click Edit, 
Second input the data, and 
Third,  locate the update button in the end.

This is not convenient. because
a) it is easy  to forget to press the button, so all your changes are lost,
b) you need to scroll all the way down.
So the update needs to be removed or at least to be moved at the top, steady point regardless, of the scrolling down.,

On airtable when you press enter after inputting the data is like update.
and each time you enter a value in a field, it is considered updated once you move the cursor, or the selected cell.
please look on the airtable screenshot. When i select any cell it becomes with blueborder, it means any time i input dat and press enter is update. MUCH MUCH faster.