It sounds that everything you are doing is correct. Lipoden shots (in our weight loss clinic they are called Lipoplex) are not guaranteed to help you with weight loss. There are some patients who love them and some (and actually most) do not feel any difference taking them. These shots are supposed to improve energy levels and speed up metabolism but there is no actual scientific prove that they do. They are healthy to take just because of the high concentration of Vitamin B in them but I would personally not expect too much weight loss just from using the shots.
In terms of your diet...with your current weight you should be consuming about 1300 to 1500 calories per day, especially on the days you are exercising. From what you wrote down, it sounds that you are not consuming 1500 cal/day. Not consuming enough calories for the body's need will cause muscle breakdown and more accumulation of fat because the body is tricked into thinking its going into starvation mode.
I would recommend that you add some carbs to your breakfast and lunch. Having a wheat toast or wheat English muffin is good. Also you can use healthy grains such as Buckwheat or Quonoa to make different recipes and add meat to them. Avoiding carbs at night is a good idea, you can continue doing that. You should also have more snacks (you only have nuts 3x/week). What I would recommend is having greek yogurt for a snack instead of having it for breakfast. For breakfast you can have veggie omelet with cheese and piece of toast, or egg with oatmeal, or english muffin with low-fat cream cheese and lox. Also you can buy some protein bars and have them as snacks if you get tired of yogurt. Fruit is ok to use for snacks as well - better to have either berries or grapefruit, the rest of fruit has a lot of sugar but it doesn't mean you cannot have an apple or an orange when you want it.
Your exercise routine is good, you need to exercise a minimum of 45 min 4x/week so you are doing the right thing.
The bottomline is you need to make sure you are getting in at least 1300-1500 cal/day and adding a bit more carbs (have high protein diet is really bad for the cholesterol and is just unnecessary). Also, Lipoden shots are not a guarantee in assisting with weight loss.
I hope you find this information helpful. Best wishes and good luck