One approach you can try is using the localStoeage API to temporarily store the form data of the user. I have done something similar in the past. You can use a

One approach you can try is using the localStoeage API to temporarily store the form data of the user. I have done something similar in the past. You can use a light library like Alpine JS to make this work nicely. When the form renders, check if there is any temporary form data in localStorage, if so initialize the form with that. When the user saves the form remember to clear localStorage. This works nicely because even if the user closes the browser or something by mistake it is all there, and you don't need to keep temporary data around in your database.