adorable-
I had the exact same thing. I would email him and no response and I would go to his shuirim weekly and one week I waited afterwards and asked him if he ever gets his emails- he told me that he has a secretary who screens his emails and prints the ones that aren’t spam or innapropriate (that should answer mikehalls concern about R’ Wallerstein using email)(also he said not to worry that she doesnt read them.. she just prints them and makes sure they arent bad) and he told me that mine must have got mixed up somewhere and I should email him again. So I did, and still no response. I understand completely that he is really busy , so I am not taking offense nor do I think that he is wrong for not answering me.. many times he doesnt get the emails..
But, since I really needed to speak to him, I went to another one of his shuirs and I waited until everyone left (about 45 min wait) and he saw that I was waiting there the whole time so he felt bad even though it was already really late.. and we sat down and spoke for 20 minutes and he helped me with everything. (BH he didnt have to go anywhere after the shuir..) My advice to you if you need to speak to him, then if you live in NY and can get to any of his shuirs, you should do what I did… He is really helpful and amazing and totally worth waiting for so long.