Financial Aid - Can I accept it partially?

Hi,

I vaguely remember to had read in the past that if you don’t accept it fully, it might impact the aid offered next year (assuming that there is no change EFC from this year to next year), but don’t remember where I read it. Can someone confirm it and/or guide me to the place where I find more details?

I got a bit of grant, subsidized, unsubsidized, and parent PLUS loans and wondering if I should take some of them, for example Parent PLUS and unsubsidized. First of all, do I have a choice to accept aid partially?

Thanks!