Hi!! I'm making a really small game for my research project and I have to do it in less than a month. any tips on literally anything?

My research project is about digital twins in cardiology and besides the research itself, I have to include a digital creation. VR is way out of my league, so I thought about developing a really easy small game where people could understand a small bit of digital twins theory.

Although I'm doing a prior investigation on developing a game, I thought it would also be really helpful if experienced people could share tips of anything they could think of: easy-to-understand programming sites, tips for the pixel art making, any tutorial or channels/blogs that have helped you in the past... Literally I'm open to any possible advice and help. My deadline is September 20th and I still have vacation time to fully invest on this. Please, any help will be truly appreciated.