Listen without rushing to fix things, ask what would help, and offer one...

https://emmasmasterwords.swiftnestly.com/posts/how-do-i-bring-up-substance-use-without-making-it-a-moral-lecture

Listen without rushing to fix things, ask what would help, and offer one practical step, like making a call together. You could say, “Want me to sit with you while we look at options?” Be clear about your limits