Let me try one more time..
Have you tried writing down what you might normally have eaten in a day - honestly eaten - and then get an approximate carb count from that and going from there?
For instance, lets say a normal day saw you consuming (and I'm just using round numbers here) 100g per day, why not set a modest goal of next week cutting that by 20%? and so on and so forth. Simply cutting down your before normal intake will at least get you started until you can see the RD.
At the very least, it is a start. It's 'cutting the carbs" in a tangible way, and even if you find out it's not enough after a consult with the RD, you will have started the process. Sometimes the first few steps are the hardest.
I'm no dietary expert, far from it. Many knowledgeable/helpful/encouraging folks here can offer great suggestions and personal experiences, but no one in this conversation can provide the wherewithal or willpower. That comes from you. No one can give that to you.
Good luck, and good health to you!