Shoud i do (Hard) Quant questions if i have 12 days left for the exam?

I have practiced Quant section from Manhattan 5lb and Big book already and i intend to score 155 in quant section. Should i practice Hard quant questions from the site , if i have 12 days left for the exam?
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For a 155, I think it’s more important to prioritise fundamentals rather than do the hards.