My EBF 3 week old has one bottle of expressed milk a day. He has no issues switching from breast to bottle, has been happy with both since birth.
Lately however he quite often throws up what looks like his entire feed after the bottle. He doesn't do this after the boob, usually only possets small amounts.
We have a slow flow teat, feed him upright, hold bottle horizontally etc. I think he might just be taking in too much. Any tips??