Seven hours of TV watching is, in my view, too long even for an adult. For a child, not yet two years, it is excessive. I don’t know how this could have happened. You will have to break the child out of the habit. Do it gradually. Introduce playmates, new toys, toys to manipulate, clay to knead and make small animals and so on. TV watching is said to be bad for the eyes and for general state of health.
Doing everything the child wants is not good child rearing. As parents, we have to set the limits and those limits should be defined by common sense.
Now is the time to start weaning your child away from his favourite TV programme.