I had a 2.5 month stall in the summer, which I broke my eating more proteins and fats (I was always eating below the 20 carbs). Tracking daily is important for me. I do IF 20:4 and I eliminated all sugar substitutes.
Since Oct 18, I eliminated all dairy (except some butter, not tons of it, but I will use some). Since the last week of October, I am doing this, and it broke another stall:

I follow this, except I do 44 hours on the fasting days, instead of their 42 hours, as I want to keep to my 20:4 IF, eating Lunch at 1pm and supper at 4:30 for a daily, even on my feasting days. I am doing dairy free (except the butter) and this protocol until Nov 30 -then doing my 20:4 IF for December with some fasting -and the Zornfast of 72 hours or more, and then back to the protocol above in January. I like to add a lot of different fasting in the mix to keep my body weight moving, and I do no snacking, no sugar substitutes, no Keto treats, no junk food, just real food. I will do a Keto desert for Christmas day, that will have some sugar substitute but only for that day. I am going to stay as dairy free as possible from now on, maybe having a tad occassionally. Many people say the dairy stops weight loss for them, so I found when I eliminated it, it really helped. I was down to only having HWC and some cream cheese basically, but took both out, and the scales dropped again.
I was 293 in February, now I am 240, so a total of 53 pounds lost so far. I have over 100 pounds to go still, so I need to be strict I feel for the scales to keep moving. I will probably be able to have a bit more flexibility when I finally get to Maintenance mode, but for now I need to never cheat and stay focused, for me this is essential. I am 55 and post menopausal (with all the menopausal hormones still very active!). My last period was on December 2016, when they just suddenly stopped, which was a surprise, but a nice one =).