hello
sorry for not replying sooner, have had a mad couple of days!
Alex is 18 weeks today, and at 14 weeks he could definitely have much more A time than your lo is having at the moment. I think this is the reason for your short naps, as he is undertired for them, and then the short naps then start to cause ot by the end of the day, meaning a bit of a double whammy!
Looking at your routine, I would suggest when you are putting him down he is not tired enough. For example, if you look at your routine, at 10am, 12.00 and 1.30pm each time it takes 20 minutes for him to fall asleep. (If I get Alex's "window" just right, he takes only max 5 mins to fall asleep once in bed.) This suggests to me that your lo's "preferred" A time is therefore 1hr & 20 mins, as that's the total time he's awake for. So I would take him to bed after he's been awake for 1hr 10 mins, or 1hr 15, depending on how long your winddown routine is and how easy he settles into bed. This still gives him plenty of time to drift off before that magic 1hr 20 mark so he won't get OT.
If you find that's still giving you short naps then try stretching him a bit- Alex could easily handle 1hr 30 total A time at this age, like Anna said. I would take him up to bed after 1hr 20-25min of A time to give him time to fall asleep independently.
This would then hopefully solve the problem of short naps which in turn would mean he doesn't get OT by the end of the day.
hope this helps!
x