Don't worry, just stay persistant and things will improve!

Remember to write in your journal even if you wake up and don't remember anything. I usually do something like 'No recall last night, I will remember dreams to record in my journal tonight.'

The core idea is just to set your intention towards remembering your dreams. I frequently go through bouts of no recall. With persistance in using my journal, and keeping track of goals I want to accomplish it always passes. Just stay diligent and you will see results