I wrote that incorrectly, it wasn't a few days after he met Putin, but a marked spike over the months after. He requested classified documents related to CIA operations like 3 days before the meeting with Putin. It's also a series of events over a couple of years because it wasn't until at least a year later that the FBI raided Mar a Lago and found more classified documents related to intelligence operations. There's no real way to know for sure unless Trump or Putin admit it, but the correlation was and is suspect by even the intelligence operations of the government and is partially why the inquiry into Trump was called for in the first place.

https://thehill.com/policy/national-security/575384-cia-admits-to-losing-dozens-of-informants-around-the-world-nyt/

https://www.foxnews.com/media/trump-fbi-raid-could-some-connection-murdered-cia-assets-msnbcs-joy-reid-speculates

https://www.nytimes.com/2022/08/26/us/politics/trump-affidavit-intelligence-spies.html