Those 650’s are notorious for having a very loose clutch leaver and tends to show as little throw-out or friction-zone play when releasing the clutch leaver.
To minimize the sloppy clutch leaver, you must first adjust the clutch cable at both the leaver end and the clutch end to achieve the clutch engagement at approximately 50 to 60% of leaver release, approx. in the middle, not at the last quarter inch of freeplay.
Once that is set you will probably notice that the clutch leaver is pretty ‘loose’ or sloppy due to the settings.
To get the slop out of the leaver you will have to take-up the slop or looseness by putting a spring between the clutch cable end and the clutch housing at bottom of the bike where the cable enters the clutch housing.
Hard to describe without pictures but I am out of the country now and cannot get a picture for you.
But search the internet and you should be able to find this remedy.
I did it on my daughters 650 last year and it worked real good. No slop in the clutch leaver and the friction zone or clutch engagement approximately in the middle of the clutch leaver range.
Hope this explanation is useful and helps in your situation.
I do not think it is a worn out clutch, too few miles.
I think there may even be somebody on e-bay that sells a little kit with spring to help with this situation. Not worth buying a kit, just get the spring yourself at hardware store and give it a try, very easy to do overall.