Thanks ladies!! Maybe on saturday just have him in the room with me while I'm winding dd down and doing her bt routine. See how it goes with him there, even if he's just sitting on the rug. I agree with pp, BT has been mommy time for so long, or as I used to call it 'boobs and bed'. I also thought of leaving around 6pm, so she sees I'm gone...but I'd rather try him being in the room and her understanding it's ok to have daddy there for BT, not the end of the world. Maybe then gradually have him hold her/rock her - hopefully without her screaming and reaching out for me. I feel more comfortable trying it that way instead of just leaving her cuz tbh it makes me nervous and uncomfortable, probably since I know what good lungs that child has!
She's also been teething terribly since 7mo, has most of the 16 teeth out. That's also caused her SA. Plus she now has a cold, runny nose, so she's extra clingy.