Should I be eating more?

Hi, I have been following this diet for 6 weeks and lost 7-8lb so far. My target is 1450kcal per day and 200kcal in exercise. I don't usually hit my exercise target, I walk around 45 min every day at 3m/h speed and I try to make the rest of my kcal with cleaning and domestics.

I have already followed your advice and bought a fitness DVD, so I will start to do it soon, but this week at work I am working overtime and it will have to wait a couple of weeks. I usually don't hit my target, and in average I would say I have around 200kcal left everyday. I don't go over either, I had only one really bad day recently, but this was a one off. I was reading posts from other users who say that increasing their kcal target and reducing the weight loss per week has made them start losing weight again. I wonder if I am doing something wrong and I should force myself to eat and hit my kcal target.

As I am not doing exercise, I work 7h in my chair and arrive home and stay at the sofa, I thought that I didn't need to eat more because I am not burning kcal with exercise, and my body does not ask for more kcal. I have to say that I don't eat more because I am not hungry. I always eat if I am hungry, I never stop myself in that way, but I do choose carefully what I eat, and if eating a banana stops my hunger, I don't eat a sandwich or crisps instead. And if it doesn't then I have a banana, a yoghurt and whatever else makes me feel full with not so many kcal. I plan to start increasing my exercise activity soon, but I would like to know if the target the system gives us is the kcal we should consume, or if it is the maximum we should not reach. I honestly say that I am not feeling hungry, I have treats such as chocolate or biscuits if I want to (but again, choosing the lowest kcal options in the market), and I have increased dramatically my 5 a day intake, which was 0 or 1 before, and now it is around 3 at least. I also have had 2 weeks off sick, and I was getting up so late (around 11.30) that my breakfast was almost at lunch and my lunch was a snack to be able to eat normally at tea time with my bf. So this made my kcal intake look even lower. I want to know I am eating healthy and I am not messing with myself. I though I was doing all right, but reading other people's posts makes me wonder if I am as right as I thought. Thank you.