I've been giving some thought about the whole paradigm surrounding LCHF, keto etc.
Our ancestors, recent and past, were almost certainly never in ketosis, at least on a permanent basis but for people wanting to change their lifestyle some will freak out unless the urine sticks are purple, and will panic that they've somehow blown it if the stick remains pink.
I've often said that returning to the diets of our grandparents a few generations ago is enough to maintain a healthy body weight, and they didn't drink lashings of double cream in cups of coffee four or five times a day, neither did they dump lots of butter in there either. So, there is a case, in my opinion, not to get wound up because twenty grams of carbs is so difficult to do. Look at the old black and white photographs of people from yesteryear if you need confirmation.
This isn't to say that re-evaluation a stalled weight loss gives licence to scarf down white foods ad libitum, that's not the case, and keto certainly works, but there are many roads that will get you to your destination and one with meat and two veg on the journey is certainly one of them.
So long as you have cut the junk, sugar and snacks and understand the concept of keeping insulin LOW, then you are going to be ok, and a bit of roast potato (done in dripping/duck fat of course) once a week isn't going to kill you, so be kind to yourself.
In conclusion, I hope I'm not sending out mixed messages here, and if you are diabetic, then your approach certainly be towards the very low end of the carbohydrate spectrum.
Have a look at this video, it chimes with me in my belief (born out empirically with my overconsumption of double cream) that overeating fat could be a reason for stalled weight loss and consequent puzzlement.