Hugs! Whining and sooking is tough to deal with.
DD is nearly 3 and some days it feels like every word is a sook. We have just started the "counting" from 123 Magic. So if she sooks (for no reason) we ask her to stop and then she gets counted and will go to her room for a time out if we get to 3. It's only been a few days but it seems to be helping.