I'm sorry.
My Yorkie also has a disc issue although she never had any problems walking and has "healed" as much as is possible.
My understanding is that if there is reduced limb function, it is VERY important to get an assessment by a surgeon (and possibly go to surgery) within about a day. I think you have done a great job so far. I'd be calling the specialty hospitals in your state that have an emergency dept and a neuro on staff so that your pup can be assessed tonight. If you have already talked to the neuro, then all you can do is wait.