My DS has been covered in crumbs throughout his little life, and he seems to have survived hehe.
I was just saying the other day that mashed potatoes was the first thing i dropped on DS. I remember it 'cos i felt so bad. He's had so much food dropped on him since then though - it became common place for him to need mummy's food washed off his head!
It truely is important for you to eat and drink.
Hope things start getting better every day that goes by. You'll reap the rewards of the hard work you have put in, and be so proud of what you are doing.
Take care