What did you eat before? Syns are in tomato sauce, mayo, gravy, crisps, cake, biscuits, the list is endless & I'm sure you can find something you like which is less then 15 syns per day.
Most evenings I have a glass of wine @ 3.5 syns (it's a small glass), and sometimes have 2 pink wafers 4.5 syns, I'll also use them on Linda Mccartney sausages or other quorn stuff.
Give us some ideas what you used to eat & I'm sure we can come up with some ideas to use your syns on, you don't want to feel deprived & give up on the plan.