I'm now sitting in my room exhausted from this ordeal. I know from previous experience that its better to just draft you block in one sitting. Once you start drafting just follow it through. Of course you can stop to take breaks, eat, etc. But I wouldn't stop and then pick up the next day. It was a three page process in my book to get all the measurements needed to draft a basic bodice.
As for drafting... its two pages for the front bodice,
two pages for the back
anddddd a page for increasing/decreasing bust cup.
Because the book's bodice is drafted for a B cup so I will need to increase