Understandable my friend. I can admit that reusing things did help a lot. I really wanted to add more elements to the game that would make it very different from the original, but I didn't have enough time. I'm in the middle of my thesis and many other university work, which also explains my inactivity on YouTube and why I missed the GMTK 2021 Game Jam and the GMC 40 Jam.
Glad to see that you know me as the dude who made the lighting tutorial :)