You can try to load an old save, though I can't guarantee that you won't encounter any bugs or issues. It's better (and safer) to start from the very beginning and skip all the way to Day 4.
Also!! Depending on what version of 14DWY you've played in the past, a lot of new updates, changes, and additional content have been added to days 1-3! It might be worth replaying — especially if it's been a while since you've last played and need a refresher ^^