belgian, H does go 3 hours betw feeds. for example, she had a feed at 2-3pm (we both fell asleep on the sofa with dd1, so an extended feed ). she then didn't feed until 6pm which she fussed on and off when i thought she should have been starving. i left it then offered another feed at 7.30 which she took fine.
she just doesn't feed as often as i think she should and she's a slight-ish baby (25th cent) so could use the extra weight - i want her to be chubby-fat like your C . she was also a bit unsettled at times today though i still got plenty of smiles, maybe she's a bit under the weather and appetite low.
Ses, can't believe GP didn't talk to you about it first. good to go anyway to get it settled but you will be the expert anyway - you know how healthy O is.
GP aside, i had a similar prob with dd1. she'd had tongue tie and didn't gain quickly. hovering around the 2nd centile before dropping off the chart, we were referred to hosp. where they tested for things like CFibrosis. But, i knew she was perfectly healthy, she was just gaining as she needed. after many bothersome appts we were signed off.
today at 3.5, she's well above average for her weight. they all catch up.