Hi mums, my boy has one nap a day. Do toddles normally drop their naps totally when they grow older? If yes, why when? 2 yo? 3yo?

My eldest stopped napping when she turned 5yrs old. My second boy is almost 4 now and it has been much harder getting him to nap. And once he naps, he finds it harder to fall asleep at night. Most nights he sleep at 10pm if he naps for 2 hrs in between. I might drop his nap soon. I guess like me, you can observe and you will know when to drop the nap when he can stay awake longer in the afternoon.