It might slow it down a bit, but you should still lose hun - but try not to do it regularly, if you see what I mean, because you are having a third more than you should really. Its only for emergencies rather than eating. Try splitting the packs first, or adding psyllium husks to make them a bit thicker (but they may make you go to the loo a bit more). Its all experimenting a bit at first, but you will find a balance. You are not very tall either, so 4 packs shouldn't be a regular thing, as it might stop your weight loss if you do it all the time. I am 5' 8" and only ever had three packs a day, but I would split them if I felt I was struggling.
Thank you for your kind words regarding my weight loss, it was hard, but worth it and I love the new "me" x
And yes, Cornwall is beautiful, especially when the sun shines lol x