i found that the first week or two, yes its a pain trying to eat so much and it feels like your life's mission...
The it gets easier; i now find, 6 weeks in to my first ever proper bulk, that if i don't eat every 3 hours, my stomach starts to rumble. Dnt eat yourself sick, but do cook meals etc to the size that you NEED to eat for your target weight (ie put the details for the weight you want to be, into a maintanence calorie program and if, for example, it says you need 600 cals per meal then make your meal to that size NOW).
If you cant eat it all dont worry, just make sure you eat a little more tomorrow, and the day after that, and the day after that, until you can polish it all off.