Not Right Now

If I say to Hunter "Not right now buddy, I have to _____" once a day, I must say it 20 times.  It breaks my heart every time.  I want to just scream and say "who cares about _____...I want to play with my son!"  Unfortunately, that's not how life works, things have to get done, and I just pray that he won't remember all the times I told him no.  I also pray that come May I'll have a lot more time to say "Sure buddy, let's go do it!"