I can see your mind working overtime right now trying to figure it out... 'What have I done wrong?' 'why all this screaming?' 'Did I push them too hard?' 'Have I done unreparable damage?'. And I feel your pain, frustration and confusion. I've been there.
Tune into that because it is likely that this connection you have with the bubs gives you direct insight into how they are feeling.... Frustrated, tired, in pain, confused, and like life is free falling, spinning out of control (my interpretation of how things might be for them but you will know better).
All you can do is understand that and be there with them, whilst providing them appropriate opportunities for sleep or rest, eating and playing. (Which if you take a minute out to recognize what you are achieving, you are likely to see that you are already doing this).
You had an amazing bw plan that you are trying to head back towards and you'll get there and so will they. Unless you think things have changed so much that the plan needs tweaking. Let us know if you need help with this. Let us know if it would be helpful to see our easy routine from when my girls were 8.5 months old.
Sending you confidence and strength! Hang in there..