Addiction, heart broken and hopeless

Hey everyone!

I would like your opinion/input/advice/support, basically anything that can help a mom who is literally heart broken and devastated to see my son who I raised/put everything I have in him for 18 years, become a drug addict, theif and a big liar.

My son who just turned 18 two days ago is addicted to drugs that he snorts percocet laced with fentanyl, which is a severely dangerous drug, and he's willing to do anything and I mean anything to get them. I just found out two months ago, in the beginning he tried to downplay it and say that he can stop and doesn't need, rehab, I didn't believe it of course and talked to him alot, as devastating as it is, to see him like that, basically my hands were tied because no one can help him if he doesn't want the help, that's what I've been told from all the facilities I reached out to,, even if he was 17 at the time, he still had to agree. Honestly it does make sense because there's no use if he doesn't want too. So the only thing I could do is talk and try to support him to stop whichever way possible, but nothing worked,, he even refused to just go to therapy. Now after he finished all his money and even sold his investments( which he lost alot of money, selling those investments at that time, but he didn't care) and now that I never leave any cash at my house and changed all my bank info, because before I trusted him 1000%, he even had my cc on his apple pay. But I had to do that because he started stealing us. So now he wants help, I reached out to a addiction center which will take another 5-8 days for placement, but he is withdrawing, and wants me to give him money to buy until he goes to the facility but I feel like I will be enabling him, and hurting him if I do, but he is screaming and crying all day and night but refusing to go to the ER. His dr, ( pediatrician) said she can't prescribe withdrawl medication, and I called to transfer his dr. to a GP but insurance says it will take 30 days for it to be effective and by that time he should be already in an inpatient facility, but I'm scared that withdrawing cold turkey may hurt him or he does something to himself. There's alot more, but this is already so long and I honestly can't even arrange all what's happening because it's alot, everyday. He is a good kid, smart, kind and alot of other great qualities but right now he is someone else. What would you do if this is your child? Maybe because I'm in the situation I'm not thinking right. Please help me!! Thanks alot!