for IMGs, as an IMG how it feels like to prepare for usmle?

About me, i feel like 1.5 years: are not even enough for prepration for step 1, i"m a second year medical student, the problem that in my university the clinical knowledge is left mainly for 3-6 years, also the books which are recommended and mostly used by the students are sometimes different from that recommended for usmle. I receive good marks but i feel that i can't deal with usmle questions at all. Do you feel the same?, any recommendations?