welcome to the TDC einginepe.
If you are not exercising then to quote DR Atkins from DR ATKINS' NEW DIET REVOLUTION THIRD EDITION you aren't doing Atkins. He revised the program in 2002 and now exercise is a mandatory part of the program. he says both aerobic and resistance training are needed. So do what you can now and build up to doing it 5 times a week minimum.
Also go easy on those low carb candies and products. If you read the book you will see in chapter 11 Q and A he says you don't need to count calories because he uses carbs to limit your foods. However that philosophy was created before the widespread use of sugar alcohols for sweeteners and protein powders for flours. Those produces moved the vast majority of the cals out of the carb column and into the protein column which distorts the low carber into thinking they are free foods. As DR Atkins goes on to say in the same Q and A eating more calories then you use will result in weight gain. Something many new low carbers over look and fail to understand. You have a metabolic advantage because the ketogenic energy system is more inefficient then the carb energy system in the human body so you get the same effect with 30% more cals or an 1800 cal high carb diet will yield the same results as a 2340 low carb high fat Atkins diet. That is the advantage he talks about in the book so often but doesn't explain well. So even though they are low carb you still have to watch the cals you consume in your extra carbs beyond your acceptable foods lists foods even if you are under the 20 carb limit for induction or your individual carb limit whatever it is.
If you follow and work his plan it will work for you.
Happy low carbing to you.