Stuck in the museum!!

I have 5 of the document pieces, have mixed the restoration solution. Done the acupuncture, can,t find the last 2 oieces of the document or anything!!!

Finish the minor hall to get the swiss army knife and ladder, then use the knife on the log book on the left of the main hall, and use the ladder on the left shelf of the restoration room. Climb up the ladder, and open the book to find the last piece.