Maintenance under DVA

Hello... after facing physical abuse for 7yrs in my marriage i finally left my husband's house in 2013 and hoped that he will change or atleast take financial responsibility of me and my son...but he has been just paying the school fee which gets directly credited to school from his account... I did not want to go to court but since he became more violent i filed DVA in 2015 and my intrim has not started yet...my husband is a pilot was drawing 6lacs back then and now he is heading his base and drawing around 10lac pm...he has hired best lawyers to harass me and delay the court case...please guide how do i request the court to ask my husbands company to provide the salary slip so that my maintenance could start. Ps. My son will turn 9 yrs in june n i do freelance work from home. Looking forward to your guidance Regards, pragya agarwal