Transition to one nap

We had to transition our son to one nap since he started daycare 3 weeks ago (they nap from 1-3pm). He averaged 30 min week 1, and now 1:10 on week 3. I hoped he’d nap for 2 hrs at home on the weekends, but he’s only sleeping for a little over an hour. He used to take two one-hour naps before, but I want to keep the same schedule he follows at daycare, so I don’t put him down for a morning nap anymore even though he shows signs of being tired & sleepy. Any tips on how to get him to nap for 2 hrs now? How long did it take your LO to successfully transition from 2 naps to 1?

FYI- this is his schedule now:

7-7:30am wake up

8am breakfast (refusing lately, too early?)

9:30am morning snack

11:30am lunch

1-3pm nap (he only naps til 2ish)

3:30pm afternoon snack

4:30pm Pick up, go to park, snack

7pm dinner

8pm bedtime (bath at 7:30pm)