The algorithm is going to completely forget about me

could be like 3 months before I can start posting again. But yes, consistent/regular videos is very important for your videos to be visible. You need a good thumbnail, title and first 30 seconds to maintain a good number of viewers - the thumbnail, especially an attractive custom one like most successful PZ youtubers do is essential for channel growth.
Don't stress yourself to post weekly, I've been told by large planet zoo creators I'm one of the most consistent and regular planet zoo creators there is. It's easy for me since I do very little editing and no voiceover so I can roll out videos at a good pace, I just need time to build. Ideally you want to make videos for fun! Don't make videos just for the sake of content, you will hate yourself for it and your audience will take notice very quickly the work you do is not something you want to do.
Make them for fun, slowly realise your niche to make yourself stand out and unique among the planet zoo community, if you don't like the stress of making videos often you can either do them every 2-3 weeks or even monthly or stop completely. Try out 2-3 videos to find out if you think you like it, if not by then I would rethink it.