The word “beige” makes me feel ill now, after a few weeks only eating food which could be described thus!
I would recommend half a chicken (or maybe vegetable) stock cube dissolved in boiling water, for when you have to eat, but can’t stomach anything. Chicken cup-a-soup (I’m on Heinz) is a step up from this - when you can manage a tiny bit of food. Or you can microwave rice noodles in stock cube water.
Tinned fruit, such as pears or maybe peaches, can be tolerable.
Cheap vanilla ice cream, or sorbet, can be good.
I had some success with peppers and cucumber dipped in hummus (not the caramelised onion one!!).
Cheese triangles on crispbread got me through some difficult times. As did plain crackers. I also really fancied some Primula, but the urge left me between deciding this and obtaining it.
I have given myself some rules (now that I can eat more normally, I’m being a bit more relaxed about them, but still applying them loosely). If I felt like eating a thing I was allowed to eat, and it was possible to obtain that food, I would obtain it and eat it, even if it was expensive. If I felt like stopping eating a food, or didn’t feel like starting it, I didn’t eat it, even if this meant food was wasted. DH is very good at letting me steal food from his plate (chips, mostly), and eating the food I can’t manage, which was incredibly helpful when this was at its worst.
He’s also been amazing at preparing me food at a moment’s notice (and, one time, preparing exactly the same food a second time, but somehow with different water, from the same tap, because the water tasted wrong and I couldn’t consume the food he’d just gone out of his way to prepare. I’d recommend having a husband like mine!)