DD (2.10) is becoming a bit of a pain about going to bed. She goes, but will often call us up to have a wee, put cream on supposedly sore places, have a drink etc. I want to nip this in the bud so though we would try a star chart - one sticker for every night she goes to sleep without getting out of bed. I think she will understand the concept.
But do I do a reward if she she complies every night for 7 nights, or once she has accumulated 7 stickers?