Sleeping through the night for babies 6 months and older

There is the cry it out method but I did the gentle controlled cry and night nursing weaning. For sleeping in the crib and getting used to it, do it at nap time.  Rock him feed him until he is very sleepy, put him in the crib gently, he'll fuss.  Stroke his head, his back or stomach to calm him. If he started to scream then pick him up to calm him.  Basically don't let him scream, stressing out makes it harder to sleep.  Want to have baby calm and think of sleep is relaxing.  It takes at most two naps to get him used to it.  Then after that used to sleeping in the crib, have a night time routine and break up the food is sleep association or any props for sleeping.  All baby need for sleep is himself.  If you nurse him to sleep or pat him or rock him then he wont know how to fall asleep without you there to pat, rock or nurse him.  If he scream in protest give it a few minutes before picking him up.  Once you calm him, put him down on his crib again.  Some kids will rock themselves to sleep or do various things but they will learn.  Here it the routine: bath time, nurse ( with lights on), reading, then lights off to sleep.  Sit next to the crib, and slowly move away through the weeks or leave the room once he's asleep.  If he wakes at night wanting to feed, you can feed him water or trying rocking him to sleep for a bit but put him back to his bed slightly awake.  Don't let him associate sleeping is mom holding me.  If he is persistent on nursing you can nurse him but make it business and short, nurse only no sleeping on mom.  Shorten the feeding at night a few minutes every day and soon he won't want it.  Make sure you feed him well during the daytime, he won't need much food at night.  You can try spacing out daytime nursing from two hours into three or four hours instead, hopefully he will get used to not wanting to feed every two hours at night.  Don't immediately reward him milk when he wakes at night.  If you wake up and get a special favorite treat, you wouldn't want to sleep through the night either.

Some good books for reading / YouTube
The sensible sleep solutions by Sarah Blunder
Sleep Solutions for your Baby, Toddler and Preschooler by Ann Douglas
Happieast baby on the block - a guide to great sleep

Dana Obleman - YouTube