Need Some Advice For My Noose ADS

So basically I’m using a noose extender by putting a cut of (at the ankle) baby sock and then another newborn sock over that for padding, then I put a hair tie to secure it and some foam insulation to put in between the dick and the noose, with that setup I can last up too 45 minutes with only last 10 minutes sometimes being a problem where I feel some pain.
I noticed most pain comes from the first layer of sock moving up on the head or if I use some other sock which is tighter and more secure I get pain both ways.

I had a thought of using some kind of rubber or silicone as a first layer to offset do you have any suggestions of material I could use to help in my case?

I would like to point out that I’m extending up too 2 to 3 cm above my flaccid length, and usually doing 3on 1 off 2 on 1 off, using a rice sock so far but will invest into a heating pad.