I just re-read my lengthy post. It is not what I intended. My point was, I now would have difficulty with 2 classes. I definately could not do 3. I am considering taking one class. I have little other responsibility at the time, but the little that I have seems to be overwhelming.
So I was suggesting reflecting on not only what other responsibility that you have but what your perspective of it is. Secondly, you mentioned that you were able to get all A's before, so I am guessing that this is important. Will you feel bad if you do not get all A's? Please know there is no judgement in grades, Im ok with a B and even a C in stats or chemistry, but one of my best friends never got less than A.
I think that your talking about it is a good indicator that you will weigh it out well and have that first week to drop after requirements are announced. I applaud you for doing this. You are on your journey and moving forward whatever you do.