napping question

FTM and EBF- 
Around what age do babies go down for a nap without needing the whole "dog and pony show?"
My almost 4mo wants to be nursed to sleep (unless he is in his car seat/stroller). Even if he is full, he wants boob/cuddling. I realize sleep training will help but I'm curious if the light at the end of the tunnel is near..?
Also I should add that he still isn't sleeping through the night (4 hours at most). If that helps paint the picture of him being a milk machine 😊🐄🍼