6 months before release date.
We should be getting a teaser trailer fairly soon and I still expect it to drop later this month, probably on a Monday as it’s normally the case, so my guesses would be on the 24th or 31st.
Some people think mid-February around the Super Bowl/13th or Valentine’s Day/14th. I don’t think it will be the case since if I remember correctly Marvel normally drops TV Spots for their movies on the Super Bowl which tend to be short and very expensive and they share the spotlight by playing alongside other announced projects.
After that I think it would be a bit too late and there could be some overlapping since I also expect an official trailer for DS:MOM in March, 2 months before it’s release date as per usual.
I sure hope you're right!