Twin discordance at 30% - anyone else?

I'm in my 35th week and the discordance between the twins is 30% (di/di)

Baby A has always been smaller, in the 20th percentile. Baby B has just been bigger, 80-90th percentile.

But today she is now only 12th percentile with him in the 90th. 2 pounds difference between them now (4lb14oz and 6lb15oz) Dr isnt concerned yet because there are no other issues and they both appear healthy. Follow up ultrasound in 1 week.

What was the size differences with your twins this late in pregnancy? Anyone have a similar issue?

Thanks!