HELP? UPDATED - THANKS

[Alex42106]

I am going back to college tomorrow night. I'll be gone for about four hours, and I'm in a panic. Alex is still EBF, and I'm having to pump to make sure he can eat while I am gone. I need help..... How much should I pump? Am I going to need to pump to relieve pressure while I am at school? I've never left Alex for more than twenty minutes before and I am worried that this could be a disater. I will only be attending classes one night a week, but I am completely unprepared for this. Any words of wisdom or advice from other moms who know more than I do would be greatly appreciated. Sorry this got so long, thanks in advance.