In order to hit my bulk target meal consistency was absolutely key to me, I ate every 2 hours on the dot, because with the exception of my 1000 calorie tuna shake eating, I found eating over 500 calories in a single sitting incredibly difficult. Some people find eating huge meals easier and find frequent meals irritating, its all about hitting your target, recording and monitoring your results and adjusting to see what works for you personally. If you're serious about this, then you must come at this with clinical precision in order to see results. Just winging it is a recipe for mixed results and eventually failure