If you know that evenings are you weak point and that you may be tempted with a snack, plan for it and have things on standby. The jelly is a good idea my go to snacks are fruit (melon, pineapple, kiwi, blueberries raspberries) which tastes too good to by syn free, quavers if I fancy savoury (only 4 1/2 syns) and fibre one milk chocolate popcorn bars (only 3 1/2 syns) which have just enough chocolate to make me feel I've indulged a little.
you are doing great so far