I read, can stay up to 90 out of 180 days

So, does it stand to reason: 30 out of 60 days

Maybe seem obvious but feeling overwhelmed at the moment so having temporary lapses of logic/reason so any help would do

thank u

Um, yes, that sounds right. In any case as long as you’re not staying for a year at a time then your risk of having any problems regarding your length of stay is extremely low.