I have joined a weight loss clinic and they recommend that I buy their meals that can help me lose weight. What do you think?

I am sorry but you must be a very gullible and stupid person if you fall for this type of crap. There is no meal plan, which can help people lose weight. The entire weight loss industry is built on scams. Many companies encourage people to buy their meal plans  making false claims that one can easily lose weight. It is all a bunch of BS. 

These meal plains do not curb your desire to eat,, they do not help you lose calories, they do not suppress your appetite center, they do not burn off fat- all they do is empty your pockets of your hard earned money. If I were you, continue with the exercise, remain motivated and eat less. If you persist, you can lose weight- and it will cost you nothing.