Oh FGS - that's no fun! Lots of sympathy from all here in Cal's World....hope you're sleeping now?
DS has been waking at 6.15 for the last couple of days and I think its a combination of hunger and itching - I've had to give him some piriton this morning so know he's really groggy. He's had a bit of a temperature too but not as bad as your DD.
Re milk etc - DS has virtually all his drinks out of spouted cups. He was exclusively BF till he was about 5.5 months but I'd expressed a few times so he was used to a teat, when we got to 7 months I introduced formula ready for going back to work at 9 months. The idea being that he'd have morning and night BF's and FF during the day - he stopped the BF's about a week before I went back to work though. At the same time as introducing the FF, we introduced spouted cups - but we use the Avent ones - so you just buy the handles and the spouts and you can convert all your bottles to 'cups'. He still uses this and I think the familiarity of the bottle has helped in the transfer.
He has a couple of straw cups too which he gets on well with. He can drink out of a cup but there's just no point trying to give him bedtime milk from one - it would be all down his front!
In terms of quantity, he has it on his weetabix in the morning, then he has milky puddings at nursery, cheese etc and he has between 6 and 9 oz's of whole milk before his bath (or after, if we forget).
I'm not quite sure how much he's supposed to have at this age though.
I wish he'd have a nap!