I was in the same boat except were on day 8. I was terrified she would fall and slip and she did once and quickly adjusted.  My suggestion I found a towel folded hot dog style under the front part of my dog's body was easiest to assist her in going down the steps in snow and ice and also if she slipped I was there holding her with a towel rather then a sling offering more support and would tell her "slow" and "it's  okay I'm right here" and "wait for mommy" and honestly my rotty took one step at a time like she waited for me to help. I was shocked she literally wanted to gallop through the snow a few days after surgery like nothing happened. She did very well in snow even when it was literally up to her chest. It appeared it was actually easier for her to walk in the snow and she still prefers it. I also put salt down to keep the ice off the steps and walk way as much as possible. Also I shoveled her a path but of course we didn't take that path much! I used a towel as a sling for probably 6 days I think it's a comfort thing for us!! 

Thanks for sharing! We will be experiencing our first winter this year, and are waiting for our first snow ❄ 

Going to check out the Ruffwear products for our girl. 😊