Could go either way. Kuririn's statements seemed to suggest he was naturally a prodigy amongst the Namekians, plus him having less dormant power than a human despite the status quo of Saiyan >>> Namekian >> Human as far as potential goes would seem weird. However, there's also the question of why wouldn't Saichoro unlock his potential to face Freeza if not when he was already handing out power ups for everyone else like a whore handing out handjobs at a bukkake. If you really wanted to make assumptions to fit everything together, I guess you could say that he got his potential unlocked offscreen in between Kuririn getting the treatment and bringing Gohan to the house and he didn't get the chance to reap it's benefits as Kuririn and Gohan did by the time of the Freeza fight due to less time, but that's a stretch for something given no evidence.