For mcq, skim the basic premise first, answer all wuestions you can with just basic info, and read more in depth for questions you cant
For SAQ, always write 3 scentences for every part. The first one for every part should always be explaining using a concept while repeating the question. The second and third should either be used for differing points (such as in compare 2 documents) or as context to the first scentence (as in one change, etc)
For the DBQ, make sure to CAPP (Context, Audience, Purpose, Point of View) 4 documents, and write 3 scentences each for the last 3 docs (like the SAQ). For the Out of Document Point, get a random thing slightly related to the prompt and write 3 scentences about it like the SAQ. Do not write a conclusion.
For the LEQ, make a basic framework of events within the time period related to the prompt. Write a 4-6 scentence context and how it relates to the prompt for 4 different events (for an example, my prompt was about labor conditions between 1890-1940, so I used John D Rockefeller, Teddy Roosevelt, the Great Depression, and FDR as topics for each body paragraph)
DBQ should always be done first, as it gives free knowledge which may be useful for the LEQ, and the LEQ takes a signifigantly shorter time to write compared to the DBQ.