Received NOA1 September 25th. We are hoping it will be approved end of January as our attorney advised us it would (taking about four months to get approved now). So is it wishful thinking that maybe we could have our K3 interview at the end of March? I've been reading on this website that the London embassy seems to be pretty quick.

I think that the 4 months timeframe is the wishful thinking part, i would say that might take up to 6 months unfortunately as there still seems to be a huge backlog from the fee increase. Then 2-3 months from London getting involved and there will be an end to the waiting!