Write anything that you can recall into your DJ, don't discard fragments! As for why it's fragmented, it can happen for various reasons, recall can drop due to stress, major change in life, or change in sleeping schedule, perhaps it could be supplements too, though i am not really into that. Either way, keep practicing recall and it's surely will be back, just give it time, and think positive.
There are also some ways to improve recall, try lying in the bed for a while after waking up, while recalling. Also you can try some mantras, like "I remember my dreams" or "I wake up after each dream and remember it" or similar, before or while falling asleep. Memory practice can help improving recall too, try recalling what happened through day before going to sleep.
Also check out this thread: http://www.dreamviews.com/dream-sign...ompendium.html

*Moved to dream Signs and Recall*