Yup. But, are you applying enough stress to promote plastic elongation? Once it get’s to a point, I doubt it… Especially if you are not reaching any level of fatigue.
One manual stretch I have been doing after I hang 2 sets straight out in the am, leaving my septum more susceptible to manual stretching, is as follows:
Sit on a toilet. Using whatever grip aid you prefer (I use a section of white paper towel, like bounty), take an overhand grip towards the glans. Stretch straight out, allowing your grip hand to rest on the edge of the toilet seat. Adjust your ass as necessary based on felt stretch and shaft length. The fixed toilet against your hand increases your grip strength, and you can relax backwards towards the tank to increase the level of sretch applied. Seems to be much more effective than just manually pulling straight out for me…