That advice sounds pretty good to me, but you will need to be gentle with a baby being kept up all day for the first time.
I think it's also definitely time for a toddler bedtime routine. Going from inducing DD to sleep to just giving her the space to sleep was a big game changer.
My DD is on the independent side, and began squirming out of carriers and rocking to sleep around 9 mos old. I don't think that's a particularly good thing, but I just mention it to explain how we got to where we are. It was clear she didn't want me to make her sleep somehow but rather that she wanted to just fall asleep herself. Nursing stopped working for putting her to sleep at 5 or 6 months of age. Sometimes I felt so frustrated as she flopped around sort of angry-sleepy-excited for like 30-45 mins.
For us, the turning point was when the bedtime routine clicked, and when I stopped trying to make her sleep somehow and just let her get there by herself, but with me close by.
She didn't know how yet, so she got mad. Then she'd try to crawl off the bed, so sleepy she could barely make it. If I picked her up, she'd flail out of my arms. Sometimes snuggling in, but always wanting to be put down. I'd just lay her back in bed while continuing to sing or rub her back or whatever she was liking. Eventually, she slept. Sometimes it was late.
But as she got older, it stopped being a fight. Now almost 16 mos, she knows the routine, and though it takes time to do all that in a peaceful way and with dim lighting, it's kinda nice to all chill out for a bit.
Ours looks something like this, and evolved once DD really got used to sleeping in her own room on a floor bed with me lying down with her until she falls asleep.
1) Bath or other calming activity; brush teeth 2) Play in bedroom until definitely clearly sleepy 3) Books and Singing until eye-rubbing-sleepy and calm. I think singing is really magic. 4) turn off the lights 5) snuggle in the dark and keep her in bed until asleep OR sit next to the bed and rub her back or just sing until she is asleep
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