Baby wakes up crying

stella

We recently sleep trained our 6 month old. She goes to bed happy and is great at falling asleep on her own. I give her a dream feed at 11:30pm. She typically wakes at around 4am. I feed her and she goes back to sleep. She wakes at 6 am and is always unhappy and crying. I wake up right away to get her. It breaks my heart that she’s so upset every morning. Does anyone have any advice?