Aidy - I came onto mumsnet tonight to write this, but if I were to write my story I would just be copying and pasting from you! Pretty much exactly the same situation. Although, luckily we have until early October for my 4 days away.
I can't seem to be reducing the feeds. Breakfast is 1/4 of a wheetabix with 30ml of milk. Lunch is about 50-70g of baby rice. Snack is a fruit compote which is wolfed down. Dinner is about 50-70g of vegetable puree.
Have you tried cold formula milk? DS won't drink warm milk from a bottle (we've tried all sorts of teets), but if it's from the fridge he'll manage about 10-20ml each sitting, which is the same amount he'll drink of water. He's great at sucking the bottle, but forgets to swallow, so it just dribbles down his mouth...
Also have the slight problem that I'm at my PIL for the next month, and MIL is always saying "hasn't he eaten enough?" when he starts to cry, when I know he should be having much more. So I imagine, when she feeds him, he isn't eating much. He can go about 6 hours max without a feed from me and is still fed to sleep.
Kazza Your baby will survive, it'll be hard for him at first, but even if you end up going cold turkey, your baby will eventually cope (awful to think I know!). You should have to give up your dream job for this!