Five feedings, not three enormous ones. The failure mode of a bulk is not discipline, it is capacity: two 1,600 calorie sittings beat almost nobody, and the shake exists because it goes down on a day the plates will not.
The pre-training snack is small and low in fibre on purpose. It is there to put fast carbohydrate in front of the session, not to sit in your stomach through the first working set.
Weigh yourself on the same morning each week rather than daily. If the trend is climbing faster than about 0.5% of bodyweight a week, that is more than you can put on as muscle, and the answer is to take food back out.