UPDATE: I have found someone willing to help with the project. The internet is beautiful!
I am seeking someone who knows a thing about 3D modeling and wants to help me in a #ZeroWaste project.
Years ago, IKEA sold a lunchbox/bento box they called the Flottig. https://web.archive.org/web/20170602055712/http://www.ikea.com/us/en/catalog/products/20294860/ & https://redd.it/6i67i8 (It was discontinued in 2017.)
They make great child lunchboxes except for one flaw. The white clasps on the side are detachable and with even one missing, the box becomes unusable. Children, as they are wont to do, are great at detaching the white clasps and losing them. (The flatware is also easy to lose and children lose that, but the box is still functional without those items.)
One Flottig that has suffered such fate has made its way into my possession. I have meticulously measured all the measurements necessary to create a 3D model of the clasp in hopes of uploading it to Thingiverse and allowing parents to 3D print replacement pieces to keep their Flottigs in rotation until their child becomes an adult and takes the Flottig with them to their new adult home to pass down to their children. And so on and so forth. That I'll benefit, too, is the motivation I needed to actually take the measurements.
So, if this sounds like a project you would like to be involved in where you take my measurements and create a 3D model and we upload it to Thingiverse as a free gift to the world, with your name as primary author for full credit, let me know! While I was planning on doing this as a free project as a labor of love (so there is no payment for any of us involved), I will happily treat my co-author of the 3D model to a Flottig of their own from the second-hand market.> prusa
I have advice but you aren't going to like it. The advice you might like is to obtain a copy of a book called "Sweet Sleep" and read it cover to cover. It contains the latest research-backed information about sleep, not just what some first wave behaviorists opined after doing experiments on dogs back in the mid century. (Sleep training is just dog training from the mid-century and does not, I repeat does not, has been studied and absolutely does not, and it has been repeatedly studied and documented that it does not reduce the number of wakes a child has. It just increases their distress.)
Here's the advice you aren't going to like ...
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Your child is not going to reliably sleep through the night without waking for one reason or another until somewhere between age 3 and 4. And that is developmentally normal. Nothing in your story right now is wrong, bad, off, or worrisome. I'm sorry that you ever had expectations set to the contrary. Those people were cruel and the only possible result would be to make you think something was wrong with you and/or your child. There is nothing wrong. Your daughter is behaving exactly as is correct for her age.
And. It. Sucks. Because you need sleep even if she doesn't. You need consistent night time sleep. And you aren't able to get that need met because your daughter is growing up exactly right. Two things can be true at the same time.
Day time sleep has an effect on night time sleep but ONLY after age two. She's not that old yet. Mess with her day time sleep at your peril, it won't change the nights.
Given that you say waking for hours, is it possible that your idea of bed time doesn't match her biorhythm? Is it possible that what you think of as bed time is actually something her body treats as another nap? Some kids can go to bed at 6-7 pm for the night. Other kids go to bed at 9-10-11 pm/midnight, but catch an hour or so nap around 6 pm. Both of these sleep profiles are equally healthy and normal, but there is no money in it if the latter profile weren't pathologized (if you get my drift). If you suspect your daughter is the latter type of child, then treat that evening nap as a nap and do the bed time routine later at true night sleeping time, and that will likely sort you right as rain. (Not for nothing but there is a correlation between what is socially considered a late bed time and intelligence.)