I'd second what the ladies have said above me, especially in regards to calling the ABA.

I also have one (yep just the one lol) fast flowing boob. To the point were DS pulls off and by boob continues to squirt milk in a continuous stream all over his face As the girls have said above reclining and feeding laying down have really helped.

During the first few weeks I also frequently burped DS during feeds. Almost every 5 minutes or so. I found this stopped him from getting really irritated with the flow, and he would generally go down more settled after this. As we slowly got the hang of managing my flow, we were able to cut down the number of burps.

Hope it all works out for you guys! and good work on making the 4 week mark, I know it can be a real struggle sometimes xx