My baby is 4 weeks old. She’ll wake up every 3 hours to feed. But her longest stretch at night she can sleep up to 4-5 hours. Her pediatrician on the phone said do not go longer than 2-3 hours without feeding her but she doesn’t know my baby is big lol. I’m wondering if at night it’s ok to let her sleep 4 or 5 hours. She was born 9 pounds and is up to about 11 or 12 pounds now at 4 weeks. I think she has reflux so the 4/5 hour stretch of sleep gives me time to get much needed rest ....