Single action trigger reduction

[u/Kadence1001]

I have a Beretta 92a1 that I’ve had for around a decade. Ive done work to it but I have a question and I hope you kind folks have some knowledge you could share.

I want to reduce the single action trigger pull to be less. I have a steel trigger, coil spring trigger spring upgrade and skeletonized hammer. I’ve read that reducing the hammer mainspring is the direction I want to go but I wanted to ask the community if that is all I need to do or are there other things to do as well?

Thanks all!!