Thanks wes!
This may be THE ticket to maximizing my cycle gains - as I am so used to eating 1,000 calories daily, that even 1,800 in a day has me full!
Shakes may well make the difference here - I find them WAY easier to take in. 
You can make a blender full of a calorie dense shake each AM, pop it in the fridge, and then just have a few drinks during each day.
An example:I Don’t Recommend Drinking This Shake All At Once
As this shake is so dense and high in calories I do not recommend drinking it all in one sitting – instead I recommend making this 2000 calorie shake in the morning and dividing it up between two or three shakers.
Ensure it’s finished by the end of the day and you’ve got yourself in an easy extra 2000 calories a day.
Years ago I used to make this shake and drink it half an hour before hitting the gym – I could never have an intense workout when doing so, I’d always feel too sluggish and heavy after drinking it all at once (that said it did help immensely during my bulking phases!).
The 2000 Calorie Shake Recipe
Ingredients:
2 scoops whey protein powder (363 calories)
2 cups full cream milk (301 calories)
2 cups of oats (616 calories)
2 bananas (180 calories)
2 tbsp peanut butter (190 calories)
1 tbsp honey (65 calories)
1 cup blueberries (85 calories)
1 cup raspberries (65 calories)
Instructions:
Place all ingredients in your blender and top up with water if required.
Please for 30~ seconds on high.
Divide up into 2 – 3 shakers and consume throughout the day.