chess routine for a serious player who want to get 1500 rating fide points but is unrated now

can anyone suggest me ways in which i can practice throughout the week and how should i allot time to each phase of tactics openings middlegames and endgames

spam puzzles every day and read how to reassess your chess by silman

@Subhradeep_Das said ^

can anyone suggest me ways in which i can practice throughout the week and how should i allot time to each phase of tactics openings middlegames and endgames

You should always begin with puzzles. You can do puzzle streak, storm, or racer on Lichess to practice easy puzzles, and then normal puzzles for harder challenges. 20% of your time average
Then you should play games. Once you are finished with a game, you should always review the game to find your mistakes and learn from them. 40% of your time average
Study courses like Chessmood or books that are useful for you to help you with your middlegame and endgames. 40% of your time average
If you somehow have extra time, you can opt for more puzzles, studying, games, or learn new openings, view master games, watch chess videos.

You last played a serious game 4 months ago. I don't think you're serious.

"want to get 1500 rating fide"

• That is not ambitious. You can get 2000 in 200 hours, i.e. 1 year.
  I wrote a blog about it
  https://lichess.org/@/tpr/blog/reach-2000-in-1-year/dF8xLiJg
  The first priority is blunder checking before moving.

"how should i allot time"
50% play and analysis of lost games
30% study of annotated grandmaster games
20% endgame study

Here is an example:
You take a pawn and lose a rook. Blunder checking would have won.
You lose this 30+0 game with 22 useless minutes left on your clock, i.e. you played as if it were 8+0 blitz.
Slow down. Take time to think.