Sprinkle cat litter after you shovel and salt, it’ll provide traction and prevent ice from reforming. You can get one good and warm set of winter clothes, or you can do a fuckton of layers. The former is simpler but can leave you with less flexibility and will probably be more expensive than wearing 3-5 layers of clothes you probably already own. If you don’t have them, long johns/thermal pants are a godsend. Gloves and a hat that covers the ears are also godsends, but if you’re willing to tough it out (and maybe lose a few extremities) you can do without them as eventually you’ll stop feeling the sting. Tuck your shirt and/or jacket into your pants, this will trap heat. Tuck your gloves into your coat or vice versa. Get good boots, i cannot stress this enough. It is not fun or a good idea dealing with snow in sneakers.
bedrock now spawns around Y=-60, give or take a few blocks