Sarvesh, what has happened is quite unfortunate. Now, the issue at hand is time. If you want to prepare notes from the scratch, it will be a an advantage because you can learn while you prepare the notes and this might also be helpful for your NEET preparation. This is the most effective way too. But the question is will you be able to manage to write notes for all the 3 subjects within the limited time that you have? It means a lot of pressure. But if you can pull it off, nothing like that. Or the other way is to manage flash cards and post its on every chapter. It might not be as effective as a notes but still can remind you of important topics.