New One Nap Routines?

After 5 weeks of my son waking at 5am (and ruling out teething, nightmares, etc.), we switched my son over to one nap.

We are quarantined, and have been for 100 days. Without daycare or other stimulation, I set up a strict routine we followed for naps, snacks, inside and outside play, quiet time, crafts, meals, baths, etc. It worked wonders to cut down on nap issues and tantrums, but now we’ve switched to one nap a day and everything has been thrown off.

Any other families using routines with their kids? If so, what do your days look like?