I need answers

So I’m currently watching season 2 of the live action and I need answers, so its said in the show that Aang took 2 years to learn water bending, does that mean that Aang is now 14? Meaning Katara is 16 in season 2 and Sokka is 17? Is Toph still 12 or is she now 14 because of the time skip? There’s so much stuff wrong with this adaptation, they are missing out key plot points and keep changing so many stories and plots