Whenever you alter your sleep schedule, dream recall will shift in some way. It should clear up in less than a week. You remember them when you first wake, and that's a good sign! If moving makes you forget, don't move until you remember. When you wake up, stay still and think of three words that relate most to your dream. These words will work as anchors, and when you move to write your dream journal, remembering those words should bring back memory of the dream.

Good luck!