WOW, when confronted with such a situation, I would probably have asked, Is that what your friend would want you to do? Does he know that you are taking off an entire week from your new routine because of his wedding? That probably would NOT make him happy and that is too much responsibility to put on his shoulders. The point of going to someone’s wedding is to be mesameach chasan and Kallah. I am sure at this point your friend is happy for you that you are being productive. Taking off a week from school “for him” would not make him happy, it would probably make him feel guilty and that’s not fair to him. I’m just saying…
As far as laundry and stuff is concerned. I already explained to you about teaching him to do his own and teaching him responsibility. And the money you give him does not have to be endless, you can give him an allowance. If he needs more, he should really learn how to speak to you with derech eretz. You can also explain to him that Respect is a two way street. Of course you must always preface it with your love is unconditional, but if he wants to be RESEPECTed he will have to also learn how to be respectful of others.