I have put an effort on losing weight by
Giving me some time for work out every day and control my diet I have the result

I recently joined a gym, I am 5'2, about 135 pounds, and am looking to lose 15 to 20 pounds. I consulted a fitness trainer, and he gave me a workout, and told me I should be able to lose the weight I wanted within two months time. I was told I needed to burn 3500 calories weekly to lose a pound of fat, the workout he gave me only burns about 1500. Do you think his opinion is based on the idea of me eating calories as though I wanted to lose weight without exercise, plus exercise, or do you think he was Tutuapp 9Apps Showbox mistaken? Thanks in advance for the replies.