Anybody studying from YJ sir, pls clear my few doubts

dm krdena pls, i recently shifted from pankaj sir to yj sir because mujhe pankaj sir ki samajh ni aarhi,

but unke padhane ke style alag h,

ab how do i check sir ne kya nahi padhaya aur kya padhaya hua h?,

or should i start from the start