Hi Joanne, 4 weeks is not long on an LCHF diet, and a plateau for a while is quite common. I have been doing LCHF for over 2 years and I lost 2 stones in weight and feel much better in my own skin. You can choose your own level of carbs depending on what you want and don't want to eat, but keeping to around 50g per day was what worked best for me. I still have to take regular NovoRapid bolus injections, but they are much smaller doses than before. I still take 20u of Lantus per day. As a Type 1, I don't expect LCHF to cure my diabetes, but I think it is a diet that does reduce the strain of diabetes on the body. There is some advice for Type 1 diabetics doing LCHF on www.dietdoctor.com.