Try not to keep your medium(soil) wet, if it is always wet, fungus like to grow on in/on it.
At your stage, your plant only needs like 50-100 ml dayly based on how dry your medium gets in a day.
Its always a good thing to remove the fungus.
Then anothe thing, your plant is already a little bit light green meaning it got deficiencies, if you don't know
what to do about it, you can make a new Question about that problem and me or other growers can help you with it :)
Good luck growing :)