Is it fine to only take 3 sections?

Ive heard from teachers and friends that there is not a real reason to taking science or writing anymore and schools only look at the main 3. I have taken the ACT once, and I am going to take it again this month and in July. I have signed myself up to take Math reading and English since Science and Writing are optional. I am a rising senior now so I will graduate in 2027 so I do have some time to take more tests. I am going to start studying this time because I didn't on my first attempt. I feel like it would make it more difficult if i added more sections for no reason. I do think I can be a good writer though, I have good grades including English (writing papers) so maybe on my 4th attempt I could add writing or science? What does everyone on here think?

Also I was curious if I can change how many sections I am taking after I have already payed for my test? And then if I cant how many attempts is too many? I dont want to waste my money but on my first attempt I got 22 in every section which I obviously plan to improve.

Thank you everyone.