Yes, you want to practice playing your slides, hammer-ons and pull-offs with either 8th notes, triplets or 16th notes..
If you’re hearing a swing feel though, that would more likely have to do with your right (picking) hand than your left. How you’re picking the notes would give it a swing feel or not.
But if you want to do 8th note slides, practice giving the first note just a little more value and don’t slide too quick. That will probably help you get 8th note versions rather than triplets/16th notes.