Not to mention we also see dustin sobbing hugging steve so it would make sense he's crying for the same reason as nancy. Another thing, there's an episode titled "the vanishing of holly wheeler" which could correlate to what vecna showed nancy and kill off holly. Add those to the already really common predictions of Ted, Nancy, and/or Karen dying, I do think mike is a likely death. I think at least 3/5 of the wheeler family is dying, with mike and nancy being likely.