2-4am wake ups

Hi! My 7.5 month old has been waking up from the hours of 2-4am almost every night for the last week. She is not teething or sick. Her wake windows are 2.5/3/3.5 and bedtime depends on what time she woke up from her last nap, usually 7-8pm. She wakes up around 11pm-12am but goes back to sleep. For the 2am-4am wake ups, she will be up for 1 or 2 hours and we room share sine we live in a one bedroom apartment. I’m so desperate for sleep that I end up feeding her. I try to do as little as possible - 1oz but she still won’t sleep so we end up giving 4oz. And even then sometimes she does not go back to sleep. This is making me depressed as I haven’t gotten a 6 hour stretch for a very long time. I feel like we do everything right in terms of wake windows, keeping her stimulated, and she LOVES solid foods and eating so we eat 3x a day along with her bottles. I know she gets enough calories. Please help