Hi Nikki, sorry to hear you are still fighting over the birds.
Firstly the birds like as much contact, time spent with them as you have available but they are not going to suffer if you are not able to give it to them.
As long as they are fed and watered regularly they will be quite happy.
I don't know what your plans are for when the baby is born, if anything like here at the moment the baby has thrown everything into termoil but have you made arrangements incase you are off your feet for a while etc?
You will prob find pet sitters in your area and they may be prepared to go and feed etc while you are unable to alternatively there may be a local member on the forum prepared to look after your remaining 3 birds for a while.
Just a thought!
Good luck
Phil