Mine is now able to fall asleep quickly with me lying with her reading on my Kindle. When she's out, I can go out of her room and do whatever. If she wakes, she either settles herself or comes to me and then falls asleep quickly again. She's four now, and I don't regret waiting till this point for things to be this easy (maybe it's just easy in comparison to the past, because my dad was shocked that I'd lie down with her nightly for bedtime
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In the past, and still, if she needs me during illness or if we are limited during travel, I use my kindle (or laptop, in the past) with headphones and am easily entertained if not productive. Sometimes kids are just needier. Tending those needs isn't a discipline problem
That said, adult needs do matter too. Sometimes they need to be adjusted or set aside for a period but it's ok to troubleshoot and find solutions. One thing that helped my DD sleep more easily without me was tucking my pillow beside her body, below her shoulder area so she had a little counterpressure while she slept.