NEED HELP WITH SAT CR

HEY GUYS
i have been using one strategy, which is first read entire passage then Q, but i cant finish CR within time ( usually exceed 15 minute or so…). so from following strategies which one is most suitable for me ? 1. first Q,which has line reference, then passage. 2. skim through passage as quickly as possibly then Q. do you think first Question,which is strategy 1, is okey ?

btw i need 700+ on CR. i usually score between 600-670