I did the same except maybe 50g left haha. I bought it to make chocolate icing for my daughters cupcakes. So I didn't ear of them (saturday)
On Monday I made those ferrero rocher and 2 small tbs not heaped was 60g (16 syns). I ate them before they even got into paper cases.
Then I tackled it with a spoon til I felt sick. Did same on Tuesday, but I used less in ferrero rocher just 45g and one weetabix. However I ate loads with spoon again.
I decided to give up chocolate for lent haha. Did ok yesterday!