I also keep a Google doc for unfinished answers. If you're using chrome, I highly suggest this:
https://chromewebstore.google.com/detail/form-saver/gcghnngjnejahhomknolenehfhfbijjh?hl=en
just in case you accidentally close a tab or something. It saves any text you put into the answer of question boxes, and the URL you did it in. But it only saves per device, so if you want to continue on a different device, you have to use word or docs or something.