I haven't seen research that suggests blending will make you hungrier faster. In fact, there is research out there suggesting it could make one feel fuller longer:
Abstract. Separation of solids and liquids within the stomach allows faster gastric emptying of liquids compared with solids, a phenomenon known as sieving. We
academic.oup.com
Some people tolerate certain oils better than others with Crohn's. I think Coconut Oil is one of those that people do seem to tolerate better than other vegetable oils.
My personal take on oils is that these are concentrated fats that would be very hard to consume in large quantities within nature. For example, crunching some quick numbers, you'd have to eat around roughly 15-16 pounds of olives to take in the total amount of oil in one cup of olive oil. Well, taking in 15 pounds of olives in a week, or even a month, would be quite a tall task. I question whether our guts have evolved to be taking in large, concentrated forms of oil like this. Even though olive oil has been around since 800 BC or so, people were not able to come close to producing it to the capacity we have access to today (plus, 1500 years isn't a lot of time in terms of evolution). I used to eat oils regularly and wonder if this isn't one of the possible reasons my gut deteriorated. Hard to avoid them entirely, but I will use them sparingly and in small quantities moving forward.
As far as the intermittent fasting, I try to eat all three meals within an eight hour period (so that my gut is resting the remaining 16 hours). I don't think this necessarily means you have to lose weight if you're getting all your calories in. But not all calories are the same, either. If you're eating 2000 calories of bananas, there's so little fat that you will surely lose weight. If it's 2000 of avocado's, you are probably taking in far too much fat. I did lose a good amount of weight, but I hardly took in any fat at first and stuck mostly to the softest, easiest to digest foods I could (banana centered smoothies and sweet potato soup). I eventually had to work avocado's in, which finally helped me stabilize.
Note: I do my teas with honey throughout the day and am not worried about keeping it within the 8 hour window.
That looks like a great starting plan, though I'd probably skip the whey and put in avocado or something with some fat/protein that isn't processed. I'd try that diet out for a few weeks and see how it goes for you. I did something very similar to this at the beginning of the year - basically centered my meal plan around rice/quinoa/veggie meals. My symptoms did improve, but they only progressed so far, which is when I decided to take more extreme measures. I wasn't doing the intermittent fasting back then, though, so that might have helped me out. My initial suspicion was that perhaps the nuts, veggies, and grains were just too hard and were scratching my wounds.
Masticate your harder foods as much as possible to help with digestion.
Keep in mind, most of this is all theoretical. There's no research out there on much of this stuff, but hopefully the logic makes sense.