Put all facts pertaining to your income and outgoings including existing liabilities in a proper affidavit or in written statement to divorce petition
Court will consider all that and also consider the income and expenses of the wife
You have to give proper cogent evidence for all your incomes and outgoings
For the evidence put forth by your wife, you get a chance to impeach her credibility by cross examining her
If you feel that the interim maintenance paid by you is high then you can take out an application to reduce the quantum of that maintenance
If court is satisfied with your reasons then your application will be allowed and interim maintenance will be reduced
Your assumption that law is biased towards women is based on assumption. Law is equal for both man and woman. In many cases the wife is ordered to pay maintenance to husband who does not have sufficient means to maintain himself