Is it possible to extract usernames from IG group messages?

So I recently purchased an established account with a good following.
The original owner had been doing posting and DM engagement groups all manually so I’m converting it all to be automated on J@rV.
I was wondering if there is a way to extract the users from the DM group threads so I can plug them in for my account to be sending them likes/comments in return.
I see an option to extract ALL users in my DM’s, but a list of 1000 people doesnt help either. Anyways, was hoping to find an easier way so I dont have to sort through the DM groups and plug them in by hand!

Any tips or tricks greatly appreciated :grin: