I agree about the calorie increases and yes do step them up. A total of 2,000 approx can be had, but by gradual increases, not a big jump, or the body could consider too many additional calories as excess, and convert them to Fat.
I like the calorie increased stated as a weekly, or fortnightly thing.
If you were for example eating 6 times a day, a simple way to get 300 calories more per day, would be to add 50 calories to meals, by having 4g Protein, 5g Carbs and 1g Fats, (49 approx). Wouldn't have to be bang on the button of g's of each, or bang on the button for cals increased per meal, as that's incredibly hard for anyone, but trying to do something like that might work for you.
If you don't eat 5-6 a day, then obviously other methods may need employing, possibly by adding some calories inbetween one or or two meals, or cutting back a little on one or two meals, where you're a bit high, and re-assigning the calories along with extra added calories, for basic dietry correction.