Hello, LA.
I am very sorry to hear how things have been going for you.
It's possible the new neuro might be better than the old one and could offer you more help or information.
I have hyper extended both legs for many years. I had a PT coming to the house due to a broken ankle. She was very nice but I figured out real quick she didn't have much understanding about MS.
When I was weightbearing again the PT would tell me I am hyer extending and to bend my knees

. She was getting a little frustrated with me so I would try and walk how she wanted me to, I thought I was going to fall. After that I explained a little about MS and the way I walk.
Your neuro was wrong. You have MS, hyper extending can be normal for us. Your toes catching on the floor or objects is known as foot drop. I hope the braces are helping.
I have foot drop. I've had it since I was a kid, it's just normal for me and I don't give it much thought beyone watching what might be in my way or the placement of my feet.
Best wishes LA and I'm glad to see you posting