Interesting that he's nice and gives a compliment and then tries to withhold his financial info. Sorry, but protect yourself. That is not at all an unreasonable or abnormal request and if he's not hiding anything it should be no problem to produce the info.
I would suggest telling him he can certainly feel free to save his money and lawyer's time by providing it directly to you before the stated deadline, and you'll just give it to your lawyer as requested once you have it all in hand. Honestly, what is it, tax returns? That's not time consuming to produce.
Just reiterate that your L needs it and if he wants to dispute having to provide it he should be talking to his L, not you, you're not the legal expert. (In a nicer way than that, if you can.)
Adinva 51, S20, S18 M24 total 6/15/11-12/1/12 From IDLY to H moving out 9/15/15-3/7/17 From negotiating SA to final D at age 50 5/8/17-now: New relationship with an old friend __ Happiness is a warm puppy.