Returning to Chess

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PJKCuber

 Hi Guys, I am returning to chess after a long 1.5 year break.

How can I regain my lost strength quickly? I used to have a 1435 Rapid Fide Rating back then?How can I get past it  soon?

My goal is to be rated 1600+ before the end of this year. I need to catch up on Samuel Sevian.