My situation is a bit tricky, and I'm not sure if I'm reading too much into it.
I asked for a letter of recommendation from two professors at my university. They both replied yes to the initial email. After about a month, I sent them another email with my personal statement and resume attached, and told them the deadline. I asked them to let me know if they received everything, and if there's anything else they need. One professor responded immediately saying he got my email, but the other professor still hasn't responded 5 days later.
I am worried, because the second professor usually responds very fast. Also, the email I sent necessitates a response, so it doesn't make sense for him to not respond to it. I don't know if I'm overthinking this, but I accidentally called this second professor "Professor" in my email even though he's technically a lecturer so I always address him as "Dr. So-and-so" in my emails. I copied and pasted the email content from the first professor's so I forgot to change the title from "Professor" to "Dr." I'm not sure if he would necessarily take offense at this?
Any recommendations? Please let me know your thoughts! And thanks in advance!