Re: breakfast cerials
Alto is less carbs than normal milk, and they do an unsweetened laptop which is zero carbs if you want to try it.
Ann is right about roasting spuds; better than jacket mashed or boiled. Or gave a couple of tiny new pots
For breakfast, if you want to try cereal, try either bite size shredded wheat (lots of carbs but almost zero sugar) or all bran, lower carbs and low GI. But as others have said, eat then test 2 hours later. Perhaps go for less than 7.8 after two hours. If its higher, have less or give up on cereal!