This was the one I used amberssleepconsulting.com
My son sleeps around 10.5-11 hours at night and 1.75 nap. Has he gone through his 18 month regression yet? If he's in a regression it could be contributing to his sleep. I also find that if my son is overtired he wakes up earlier than normal, which shortens his night sleep
My guy is very similar to yours! Sleeps around 10-11 hrs a night and naps around 2-2.5 hrs a day in one nap. Pretty much everything I’ve seen online says that around this age, 11-14 hrs in a 24-hr period is normal.
12 hours straight! If you need a sleep trainer let me know. She does virtual… and she’s awesome.