You're already quite a healthy weight, with a BMI of just over 19 which most of us can only dream of at this point! Weight certainly won't come off in a hurry when you're near the lower end of the healthy weight range and don't have much to lose at all.
I'd suggest giving it a few more weeks and seeing if the scales start to go down, but if not 5:2 may not be the way for you due to your medical situation. That said, another form of IF like ADF might help you to maintain weight (perhaps with a slow loss).
What I wouldn't give to be your size. I'm 5'4" and the smallest I've ever been was 8 stone 13lbs - and that was only a brief dip below the usual 9+ stone.
I'd suggest giving it a few more weeks and seeing if the scales start to go down, but if not 5:2 may not be the way for you due to your medical situation. That said, another form of IF like ADF might help you to maintain weight (perhaps with a slow loss).
What I wouldn't give to be your size. I'm 5'4" and the smallest I've ever been was 8 stone 13lbs - and that was only a brief dip below the usual 9+ stone.