u/Dazzling_Ad6162

I have a question about the IELTS Reading section. Is it always true that Passage 1 is the easiest and the difficulty gradually increases up to Passage 3? Or can the difficulty sometimes be random?

While practicing with Cambridge books, I’ve noticed that sometimes Passage 1 feels more difficult than the other two passages.

So, what should be the best strategy in this case?
Should I always start solving Passage 1 first, or should I spend the first 2 minutes reading the opening sentences of all three passages to judge their difficulty and then start with the easiest one?