Hi Sally, 3lbs is still a good loss, thats almost a stone a month which is average for cd so please don't be upset by it..also you have an underactive thyroid so i rekon thats a great result.
I find the fluid ok personally but i hear some people make a point of downing 1/2 litre first thing in morn, then another 1/2 litre with 'breakfast' and so on...it may be easier to for you to do it in big chunks. Also there are water flavourings you can get, i have yet to try them but heard good things about them. Best of luck, stick with it and you'll be just fine...you've done the hardest part.x