If it is similar to Type 2 diabetes...my DP has this and have to do alot of trial and error and it isn't always what the professionals say, it depends on you.
Anyway try to limit your fruit intake as these contain alot of natural sugars and will put your level up straight away. Especially dried fruit as this is alot higher again. You would probably do best on whole foods, meaning without lots of preservatives and additives. Eat heaps of vegies and try pita bread, there is a good brand out there called Mountain Bread and they have heaps of different types like corn and rye etc. We have just switched to eating our dinner meal in the morning instead and i know it would be a little hard for you atm but i really think this has helped DP's levels to come down, then a salad pita roll or two for lunch and then just a plate of vegies for dinner or you could stirfry your vege for something a little different...it does take a few days to get used to and you do tend to eat a smaller portion as well as you just don't feel like eating a massive meal in the morning. Try snacking on a healthy smoothy during the day.

Remember your first morning reading is your fasting one and it will always be higher, however it is the most important reading of the day.