Correct, it was not Putin's plan to occupy Ukraine. You don''t occupy a country of 40 million people, the vast majority of whom want nothing to do with Russia, with an invading force of 160,000. It would be literally impossible as well as geopolitically pointless. But this has all been discussed before and at this point if you still believe Russia's goal was, is or will be occupation of Ukraine then there's nothing that can be written that will convince you otherwise.
And the other thing you write is NOT correct, it is in fact one of the 4 aims of what he calls the SMO to overthrow the Zelenskiy government. Fortunately for him it would appear the West is now on the same page regarding that.
Your last sentence was correct. The original goals of the 'SMO' have not changed. And I've a suspicion that 3 years in, you still are unable to state what those goals are without looking them up. Note here by the way: I'm not saying you even have to believe that those are in fact the goals. I'm asking: can you even state what they are? Because Baerbock can't. Kallas can't. Lammy can't. They're still on the "Putin thought he would occupy Ukraine in 3 days!" script.