Should I challenge to reduce child maintenance in high court?

Hi there I am Jignesh, working as manager, earning 1.7 lac/month. My wife, Neha, working as lecturer. My wife has done the 125 crpc, she demanded 26 k for her and 26 k for our child which was 2 year old that time and judgement came as 26 k to pay to my 5 years old child and as my wife is earning she got no maintains. We both have not submitted any income proof. In my cross I just said that I am earning 60k /month. Judgement said that it has assumed 1.30 lac as my salary(which was filled in my wife in this case) and in that way it has granted 26k to my child. Should I challenge this in high court to reduce the maintenance to my child? I am not sure if my wife will also challenge this in high court to get her maintenance too or to increase child maintenance or both. What should I do there? From few lawyer I came to know that if I go in high court amount will be increase. Is that so? Is that only my responsibility to maintain my child? I need to give 3 years arrears too ? any fair advice ? Do you think I should not challenge this ? why? Thanks