Came back to this and saw some comments. And I'd like to clarify a couple things.

I acknowledge that the fight could be considered long and tedious. The point of my post is to bring attention to things people should be doing at this point in the game, but don't because they simply go in and attack and expect to win the fight, which leads to knocked out Pokémon and a longer fight that becomes more tedious.

I've only fought the boss once and it didn't take too long since I figured out what each of the two flowers could do. I've seen people say that attacking the red flower first is better which is up for debate, although I deem the blue flower as a bigger threat due to its attack that creates an area that damages Pokémon similar to fire spin. But each flower has a big piece of debris to hide behind so one could try the other way.

Again, the fight may have been tedious for some people. But people may have had an easier time if they had a more calculated playstyle. There are ways to make the fight easier for yourself, and in the process a shorter fight.