Hope someone has some advice for me. My 7 year old DS is really testing my patience at the moment. He's generally well-behaved but has developed this stroppy attitude (backchatting and being very demanding) and is really grumpy/ whingy all the time. I feel like I'm constantly telling him off for being cheeky and he sulks if he doesn't get his own way. It's only been for the last few weeks and I have no idea how to deal with it, I don't know if I'm being too harsh or if I need to be stricter with consequences etc.