How much sleep in a 24hr period for baby for 18 weeks?

Hi. Does she have a routine set every night?

My baby turns 20 weeks tomorrow - she's getting around 12–13.5 hours of sleep per 24 hours, including daytime naps and overnight sleep. Her day time naps only tend to last 30-40 mins. Average total amount of daytime sleep is 2.5 hours, average total amount of nighttime sleep is 10.5 hours

If her naps are lasting 30-40 mins, how often are you putting her down for naps? Every hour and a half? Cause she’s doing a 1-1.5hrs nap in the morning, a 1.5-2hrs nap after lunch and then a 1hr nap in the afternoon and 30 mins nap late afternoon/evening- and she sleeps between 6-8 hours in the night … but that’s still not enough.. but she doesn’t show any signs of fatigue everytime I put her down for naps.. and she’ll cry for 10-15 mins when I try to put her down to sleep ..

I would speak to a medical professional if you’re really worried. There’s such a huge range of “normal”. Look at how shes eating, her wake windows, does she seem content? Wet and soiled nappies - how often are they. Those are also important. My baby is 11 weeks and she sleeps 14 hours on average most days which is the lower end apparently .. some 24 hour period it’s 13. I give her opportunities to nap regularly in the day but sometimes they’re just cat naps so sometimes total for 2.5-3 hours and that’s the lower end. I also was really worried and often felt I was doing something wrong. We try and wake her and bedtime around the same time and that seems to help and even things out but during the day it’s always different. I think just be as responsive to her needs as possible and if you’re concerned reach out to a midwife or GP or a health visitor. I think speaking to them is always reassuring!