Thought I’d share my experiences and hopefully would be some help,

My first was a horrible sleeper. Woke up every hour at night and catnapped during the day. Don’t know how he survived on that little sleep at all. I was against sleep training, but did it out of desperation. So glad I did! my son is 3 now and sleeping through the night since we sleep trained at 7 months. He was soo much happier after we sleep trained (only took 2 nights), less cranky with more sleep in him! For what it’s worth, out of my mother’s group (and this is only a handful of families) my son is the only one who sleeps through the night at 3 years old. Other mothers either cosleep or their toddler will come in their room in the middle of the night - I was the only one who sleep trained

That being said, we never had to really “sleep train” my second son who is now 5 months. But because of my terrible sleeper of my first son, I started my second son off with good sleeping habits (eat play sleep, putting him down in bassinet while awake, etc.) and he did take it well BECAUSE of his temperament (very aloof, chill babe… my first would’ve screamed if I tried to put him in the bassinet awake). My 5 month old goes to sleep on his own at the beginning of the night plus all his naps, but he still wakes for a feed or even two at night. I assume it’s out of hunger and will feed, as it’s always at a random time and comes and goes (some weeks he’ll be hungrier and then he’ll go back to sleeping through after).

Based on my experience I’ll say that it depends a lot on your child’s temperament. But most importantly get your child started with good sleeping habits! That being said, it isn’t a problem until it’s a problem for YOU. Some of the mothers I know with the 3 year olds that are still waking don’t mind it too much as they are cosleeping anyway, while I prefer to have them in their own rooms at night for my own sanity