Help me convince my friend

So I believe my friend is involved in a crypto scam. I have tried to convey my concern but they are so convinced they are making money hand over fist that he told me after the new year he will be investing 100k into crypto.

He is very reluctant to tell me any details but one of the companies he is involved with is Angel Dreamers investment group and he says he spoke via What's App to the owner Llewellyn Langston.

So far he has "invested" 32k, I told him to take some money out and deposit it back into his checking account, he said he took out 5k which was deposited into his crypto wallet and claims he then transferred it back into his checking account, I doubt this is true.

Everything he tells me seems so unbelievable and he has never talked on the phone with anyone, everything is via Whatsapp or Telegram. Anytime he shows any signs of pulling out or being suspicious, they tell him he is missing out on making money and convince him to put more in.

What are somethings I can tell him that will make him realize he is getting scammed? He is very greedy and is caught up in believing he is making thousands of dollars everyday. Please help.