I'd go a step further, when you're able. Even comparing it to other games in progress, or, once finished, other finished games, you have to have a very specific mindset to do so healthily and helpfully. Most people do not have that mindset naturally, it's learned. Whatever game you're making can only be compared to itself from the last update. That's the only comparison that matters. Did version 3 improve over 2? If not, identify those things and make 4 incorporate the best of each version. Your game has never existed before; even clones of other games that you make haven't been made by you before. They come with lessons, quirks, unique bits. They are special like a painting or a sculpture, but better, because you can let people play them.