So I've learned some pretty large pieces in the past (Beethoven 3rd mvt concerto no. 4, Chopin Fantasie and Ballade no. 1, a few Haydn/Beethoven sonatas, etc) but it always takes me SO LONG to learn these pieces up to a good standard and I was wondering what tips anyone had for learning pieces WELL but in a timely manner. I'm planning to learn all of Chopin's 1st concerto and while it's not too difficult for me to sight read through, it still takes me a while to read through the piece, even slowly. So how should I go about learning large pieces? Read through the whole thing countless times slowly with both hands until it's memorized and I can get it up to tempo? Focus on smaller bits then move onto a new section? Also, I have a really really bad habit of stopping and starting when I'm sight reading (and practicing in general), so any tips anyone has on this general topic would be greatly appreciated!
Thanks!