Keep hacking at it, it is worth while to prevent PRE becoming T2.  When my GP told me I was Pre, and I should stop eating bread & fruit, I threw a complete wobbly.  Then a bigger one when the dietician told me to eat Ricecakes instead of bread.  Ricecakes have the highest GI of any carb food!!!  I used to live on bread (homemade) fruit (out of the garden) and jam (homemade), and avoid cheese and limit red meat 'cos they were high fat.  Now I have had to learn to go completely the other way about.  I  still make bread, but only eat one slice a day, and only eat one fruit a day.  For the first few weeks I really floundered, but have gradually adapted, and my poor husband has got used to no potatoes, and I've got used to having a teeny weeny potion if we have pasta or pizza, and I've bought a special mini dessert bowl (about 1 1/2 " across) so I can have the same as him....but a lot less. It is just a matter of getting used to a new set of attitudes.  Go gently with yourself and you will get there!