Is it possible to become a dragon disciple and only after some levels or all of them to change your race into a draconic one?
Without losing its abilities I mean.
Sure. All the character needs to do is kill themselves and have someone reincarnate them. Repeat until kobold.
Kobolds ain't got the dragon type in pathfinder.
If we're going to be pedantic, OP didn't ask for a race with "the dragon type". OP asked for a "draconic race". Kobold is pretty much the only one that doesn't involve significant houseruling.
As for the original question, you wouldn't be able to take more levels, but you'd keep the ones you have along with their abilities.
What is this about, exactly?
DD has a Race : any nondragon prerequisite.
And there are a few ways for PCs to actually count as dragon : being a wyvaran, mostly.
If you were to become one of those, or acquire the type while a DD, you'd stop meeting the prereqs of the PrC. Which would be a problem.
I'm actually not 100% sure what'd happen. I'd lean towards losing the benefit of all class-features, much as I dislike the idea. That's how it usually goes when you lose the pre-requisites for stuff. I could easily see this being wrong though.
I also believe it is the silliest of prerequisites.
I understand the purpose of it is to prevent actual dragons from entering it - like they need ot - but preventing some of the most flavorfully motivated characters from becoming Draconic Disciples saddens me.
Big winged kobolds should be able to become more dragonish. Bad enough they can't take the fun kobold-only archetypes.
Edit : ninja'd, and half-elf correction, as I misread the Dragonsoul thing.
Kobolds ain't got the dragon type in pathfinder.If we're going to be pedantic, OP didn't ask for a race with "the dragon type". OP asked for a "draconic race". Kobold is pretty much the only one that doesn't involve significant houseruling.
As for the original question, you wouldn't be able to take more levels, but you'd keep the ones you have along with their abilities.What is this about, exactly?I believe the OP is referring to this line in DD
Therefore, once you gain the dragon type you would be unable to take more levels as you are no longer a non-dragon. You wouldn't lose any abilities though as the class has nothing stating you would for doing so.To qualify to become a dragon disciple, a character must fulfill all the following criteria.
Race: Any non-dragon.
Ha, I see. So OP did actually mean changing race to an actual dragon. Hoo. It's unclear what happens to existing abilities when you lose the prerequisite for a prestige class, so your answer is as good as one can expect.
Edit: Forgot that wyvarans were a thing and that they counted as dragons. Still, changing race from a non-dragon to a wyvaran is, as far as I know, not possible without a lot of GM fiat.