Hey Ms. Sunny...

*hugs*

"he was really working hard to do discovery(?)"

Discovery refers to the written request your lawyer sends out for the other party to answer truthfully usually revolving around spending and financial assets/liabilities. It can be a basic financial affidavit or require exhaustive information going back five years in hard copy. The parties are given about a month or so to compile the data.

Your lawyer or paralegal can explain it better.

*hugs*