DD2 is 10 weeks old and after 3 10-hour feeding sessions (which the mw said was 'normal') I got some formula in and have been mixed feeding ever since. She only usually takes 2oz; when DH feeds her if I'm out (I can't express more than 1oz at the most)
Today, I bf her at 6, and 3.5 hours later she's still happy (sleeping currently) and not screaming. I know I buggered up my supply by introducing formula, but she can only feed off one side (seriously I have nothing on the other side, no milk came in at all) and I was on the verge of walking out.
I know it's not much, but for me, it's a huge deal, and I just wanted to share.