How to jump in blitz rating from 1300 to 2000?


It's not so hard to improve from <1000 to 1300-1400 if you apply yourself as you likely have. It's a little harder to improve from that level to 1500-1700. Then improving from there to 1800-2000 (advanced level/class A) is much harder for most players. Set goals; you're 1300s, so aim for 1400, then 1500, etc. Practice tactics and analyze your games - especially your losses - so that you learn from your mistakes instead of repeating them. If you truly want to improve, play longer time controls and study the game. If you improve your game as a whole, a higher blitz rating will come with that improvement.

Well my post got cut off somehow. Basically, it's not so hard to improve at the beginner levels. Improvement gets harder the higher you climb in rating. Practice tactics and analyze your games - especially your losses. Learn from your mistakes instead of repeating them. If you truly want to improve, play longer time controls and study the game. There is no magical road from 1300s to 2000 in blitz. Unless, of course, you use assistance ;) just keep practicing, improvement will come

My advice is to stop with the first part.
Take many months off of blitz, or if you play it you should play less.
Instead, study. I would recommend "soviet middlegame technique" (Quality Chess). Focus on slow games, this is likely to improve your chess. If your chess improves, it is quite likely your chess intuition - which is used a lot in blitz - will improve.
"..., you have to make a decision: have tons of fun playing blitz (without learning much), or be serious and play with longer time controls so you can actually think.
One isn’t better than another. Having fun playing bullet is great stuff, while 3-0 and 5-0 are also ways to get your pulse pounding and blood pressure leaping off the charts. But will you become a good player? Most likely not.
Of course, you can do both (long and fast games), ..." - IM Jeremy Silman (June 9, 2016)
https://www.chess.com/article/view/longer-time-controls-are-more-instructive
Possibly of interest:
Simple Attacking Plans by Fred Wilson (2012)
https://web.archive.org/web/20140708090402/http://www.chesscafe.com/text/review874.pdf
http://dev.jeremysilman.com/shop/pc/Simple-Attacking-Plans-77p3731.htm
Logical Chess: Move by Move by Irving Chernev (1957)
https://web.archive.org/web/20140708104437/http://www.chesscafe.com/text/logichess.pdf
The Most Instructive Games of Chess Ever Played by Irving Chernev (1965)
https://chessbookreviews.wordpress.com/tag/most-instructive-games-of-chess-ever-played/
Winning Chess by Irving Chernev and Fred Reinfeld (1949)
https://web.archive.org/web/20140708093415/http://www.chesscafe.com/text/review919.pdf
Back to Basics: Tactics by Dan Heisman (2007)
https://web.archive.org/web/20140708233537/http://www.chesscafe.com/text/review585.pdf
Discovering Chess Openings by GM John Emms (2006)
https://web.archive.org/web/20140627114655/http://www.chesscafe.com/text/hansen91.pdf
Openings for Amateurs by Pete Tamburro (2014)
http://kenilworthian.blogspot.com/2014/05/review-of-pete-tamburros-openings-for.html
https://chessbookreviews.wordpress.com/tag/openings-for-amateurs/
https://www.mongoosepress.com/catalog/excerpts/openings_amateurs.pdf
Chess Endgames for Kids by Karsten Müller (2015)
https://chessbookreviews.wordpress.com/tag/chess-endgames-for-kids/
http://www.gambitbooks.com/pdfs/Chess_Endgames_for_Kids.pdf
A Guide to Chess Improvement by Dan Heisman (2010)
https://web.archive.org/web/20140708105628/http://www.chesscafe.com/text/review781.pdf
Seirawan stuff:
http://seagaard.dk/review/eng/bo_beginner/ev_winning_chess.asp?KATID=BO&ID=BO-Beginner
https://web.archive.org/web/20140708092617/http://www.chesscafe.com/text/review560.pdf
https://www.chess.com/article/view/book-review-winning-chess-endings
https://web.archive.org/web/20140627132508/http://www.chesscafe.com/text/hansen173.pdf
http://www.nystar.com/tamarkin/review1.htm