WD Black Dual drive running slower and slower

Is there any available tools to optimize it faster for data / application process? Does Trim helps? please advise the steps on how to.

Thanks

How is your unit configured? Did you fuse the SSD and HDD into a single volume? Or are they working separately?

WD Black2 Dual Drive 2.5" came with the 120 GB SSD + 1 TB HDD,
OS drive installed in SSD, and HDD as a data drive. been using for year, it becomes slower now. looking for any tool or method to optimize it.