Yellowing leaves

You have a great plant on an relatively small pot, this means that you carefully need to provide nutrients, and if you don't put an abundant amount of it, the plant will need to suck it from the leaves, which is great because you will have a final product clean of residual nutrients, and bad taste, etc. If I were you, I would put some molasses on it, banana skin after 48h on the water, nutrients, etc etc. Also, you might take these yellow leaves off, as they are not doing any energy production, and is making barrier to the light penetration