Conclusions have been drawn from your comments only. First you make 56,000 / month and able to maintain yourself and your child. Also in one of the comment you have mentioned that your goal is not just to be greedy... How should I intrepret? Also your husband doesn't have his own house. Why don'y you ask for shelter rather than maintenance? Let him pay rent. As far as child is concerned, it is shared responsibility. Please go through below link.
Ofcourse wife should be supported but when greed is involved then it ruins relationship. You would be happy to wipe out your husband's monthly salary but even though your parents spend 10% of their salary on your husband or in-laws then you would fight with your husband.
In one of your post you had mentioned that luckily your wife didn't know some judgements so you managed to fool her. I am sorry I do not have any intention to put you down but all your recent posts are opposing male member's comments and somehow favor women. Is there any law which protects man other than defamation and perjury that too post 7-8 years of fighting case? Anyways All I am saying please help in the right direction. Such tactics of getting husband's credit card and all will drag case further. Her husband should contribute towards her son not her at all. As I said I am making much more but not paying maintenance because we stressed on unable to maintain. It would be better for Swati to request mediation in the court and settle with MCD. She can enjoy tax free money and high interest rate in FD will give her better maintenance money and much needed peace than finding all tricks to harass her husband. Her husband will also open her books.