Has anything changed 3 weeks ago? Especially sleep related? I once had dry spell due to minor change in my sleep schedule and i got back to having lucid dreams semi-regularly once i fixed it back.
Playing video games and watching videos(especially humorous ones) helps me if/when i am stressed, though i am not sure if it'll work for you, really depends on how much you are into that.
And try to not abandon dream journal, i know it takes time, but it's completely worth it, especially for DILDs.
Good luck on getting lucid!