Red-Bellied Woodpecker plumage question

Hello!
We have a young red bellied woodpecker that has been coming to our feeders for several months. It seems to have all of the regular markings except that its head seems to be staying a soft reddish gray. We think its a male because those reddish gray feathers are where a female would not have any red feathers. We tried to google how long it takes before a male gets its full red plumage and can't find that specific answer. Do you know?
Thanks in advance!

Greetings! As you have found, it is pretty hard to find answers to the timing of bird molts! While it appears that some juvenile feathers (especially wing feathers) might persist for two years or more, the head feathers turn red much faster. Most juvenile Red-bellied Woodpeckers should have their red in place by the start of this autumn.

-Naturalist Andy Avram