Many of these are repeats from above but here are the things I tried for my Dobe girl when she was living with CSM.
-Nail grips- not enough traction, flew off frequently and I’m still occasionally finding them around the house. Dr Busby’s toe grips were the easiest to apply and also the most likely to fall off. I also used glue on nail caps which worked slightly better but in the end neither option had enough grip for her advancing condition.
-Stick on paw pads- too unreliable. Weird fit, might require hair trimming and if they didn’t peel off on their own my dog would help them along. I tried the separate toe/ pad option and the toe/pad one piece which she absolutely hated. Anything that didn’t allow the paw to expand seemed to actually make her balance worse, which makes sense.
- Boots and socks - Well fitted Ruffwear Grip Tex with toddler socks worked well early on. I transitioned to just rubber coated socks with glove bungee suspenders when she was toe dragging and tripping on the boots. Both options were fine outdoors but I live in a wet climate and they needed to be changed very frequently. Inside I sometimes used PawZ rubber dog booties which are basically a rubber balloon. Those work well but fit tight by necessity and don’t allow any airflow to the foot which is not good for any real length of time.
-Throw rugs, runners and stair treads - These were the most effective and easier on both of us. I bought thin Berber runners I could throw in my washer. For the wood stairs I used Eden peel and stick treads. They have something similar to cling film backing as opposed to actual adhesive. I thought they would either be useless and peel up or ruin my wood but they have done neither in several years of use. I think I’ve replaced two.
Paw grip wax/ spray - Surprisingly the wax worked well provided it was applied frequently and lightly. Show Foot is a spray and although that stuff is amazing in the show ring it feels a bit like pine sap and is a bit messy to apply. The wax was easier for me to put on solo. Dobe girl seemed to enjoy her frequent foot massages whereas she did not like the smell or process of the spray so much. YMMV.
https://www.amazon.com/gp/aw/d/B01N9XLVOY?psc=1&ref=ppx_pop_mob_b_asin_title#aw-udpv3-customer-reviews_feature_div
The paw grip granule application linked above looks interesting and I probably would have tried it too had I known about it.
Good luck OP. I hope you find something that works for your pup. It’s heartbreaking to see them struggle.