All the best for mains tomorrow!!
For next 4 months i feel u should go on revising chemistry (esp inorganic,organic) solve problems as much as u can.(u might b done with MS Chouhan?)
Solve test papers regularly.keep the frequencey atleast twice a week after mains1 and almost alternate day after mains2.
For DC pandey i would suggest u to skip level 1 questions and directly solve subjective and level 2.
Dont read too much theory for maths unless u need it..instead attack questions.
Dont ignore previous year papers!!(even solve subjective questions)
Joined any test series yet?
Dont ignore qualitative analysis,trignometry,thermodynamics,equillibrium,organic,optics.
And yeah there is mostly 1 question in advanced either from measuring devices ,or dimensions.(in 2k18 there was a paragraph!)
But yeah first focus on mains.