Hi Anjia, did you go straight from whole patch to half? You could maybe go back up to 3/4 if so & see how you feel on that, then reduce further to half if need be. Even if you don't want to go back up I think it worth persevering as the withdrawal effects may well subside in time. I have never been on oestrogen only, but do find that any change in dose, up or down, or to a different regime causes vasomotor symptoms to worsen.