My wife/lawyer are requesting the past 7 years of taxes, 1099, pension and present pay stubs to date, is this a requirement from the start?

My wife and I separated August of 2010, she lived in our house until February 2016, our house was in foreclosure and is foreclosed and resold. I was paying all the bills except food. gave her money when every she asked for it 99% of the time if I had it to give to her.. my two daughters were in and out of college, I was paying student loans, I took (3) with drawls from a small 457K plan we had to help pay taxes and student loans, we were financial hardship. My wife worked; annual salary $22,000 mine $90,000 to present $100,000. Now I am out of work at this time using what little savings I have and a small pension to pay my daughters student loans, wife's car/insurance payment and my car/insurance. any money I borrowed or loan I took was to pay for taxes and student loans, room and board for my daughter while in college (masters). my children are adults 25/27, my youngest was 18 when we separated.