Eat as many as you want, I don't care. While bulking the idea is to eat as many calories as possible. When I bulk I easily consume 6000+ calories a day. But I need to eat 3500 calories just to maintain, so everyone's body is different. I would venture to say that 2600 calories is not enough. Basically, stick with eating every 2-3 hrs. Get 2g/lb of body weight in protein and try to eat at least 4000 calories a day. That will be a good start for you.