You already sounds like you are thinking about the right things. I would say that there is no correct answer, because it all depends on deadlines and how busy t

You already sounds like you are thinking about the right things. I would say that there is no correct answer, because it all depends on deadlines and how busy the senior developers are, but in general: you can't ask too many questions, BUT when you do get an answer, write it down! There is nothing that shows lack of effort when you have to spend your time as a senior developer repeating yourself because the junior developer did not write it down or could not remember it. That is the only thing I would say to you! And good luck and keep hacking!