Rachael -That's great that he's now drinking a bit, just keep that up if you can. Don't worry about formula too much if you are FF, I think breast milk is ok though. When Lucie was really sick with gastro she actually wanted some rice cereal with water, which I mixed really thin. But the doc said not to worry about solids for a few days anyway. Just keep an eye on the nappies - sounds like you are doing all the right things. It's so scarey when the little ones are so sick, but your doing an excellent job. Just trust your instincts, and go to hospital if you feel you need to.