Chances are, it’s because you’re doing something different. Perhaps you don’t think about LD’ing as much as you use too.
Think back to when you did get LD’s, and ask yourself what you did differently.
When you wake up, instead of reaching for your DJ straight away, instead lay there a little while. Think about your dreams.
Once you have them firmly in your mind, then write them down.
Another tip - if you don’t already, keep your DJ close to your bed. If you move around a lot, there’s a greater chance of you forgetting your dreams.
Use RC’s. Pick around three.
Everytime you think you may be dreaming, try your RC’s. They should tell you you’re dreaming.