Incresaing ftp effect

I use the training effect from garmin to gauge my workout. A month ago, with this workout, i used to get a training effect of 3 or 3.1. Now i am getting 2.8. My body adapted i guess. I need to increase the watts. Instead of re creating a new workout or editing the current one, Can i just increase my ftp ? would that increase the watts? Not sure on how much i should increase though. Advice ?

Yes, just increase FTP. Looks like 10% improvement but pretty hard to say for sure. I would probably increase FTP 5% and see how it goes.

Great, will try 5% and go from there. Appreciate the advice.