Can I continue purl wise slip stitch edge on garder stitch section to stockinette section and then back to garder section on a scarf?

I am a true beginner. Have practiced stitches. Trying to knit my first scarf. I have a 6 inch section of garder stitch with a purl wise slip stitch edge. I want to switch to a 3 inch section of stockinette stitch. Can I continue the purl wise slip stitch edge in the stockinette section? And then I want to repeat the 6 inches of garder stitch and repeat the 3 inches of stockinette etcetera until end of scarf. Thank you in advance for any advice!

Welcome!! Yes you can continue the slip stitch. Sho you’ll get a nice chain up the edge.

Thank you very much.