I was perusing hot wallets recently and USDT is still pretty well funding on a few wallets (BSC, SOL, TRON) if I remember. USDC is mostly empty or near empty. Didn't check other coins but if you can I'd cancel the withdrawal, swap to USDT, swap back to USD somewhere else. Costs some fees but much better than potential total loss.

And send small some test transfers first to see which paths work.

reading your original post, if available to withdraw only shows 0.1, are you possibly lending out or taking a margin position? I experienced that the 'available to withdraw' field indicated what I should be able to withdraw in theory, not what ftx could actually handle