Your first task should be to get better at tactics. It's one thing to understand what a pin is and why it works, for example, but it's quite another to be able to spot the circumstances under which it's advantageous for you to use it.
So my first advice to you would be to work out solutions to tactical puzzles found in books or software. There's a series of books from Russia Chess House called "Chess School" (vols 1a, 1b, 2, 3) which set out 500+ tactical puzzles.They start at levels good for 1200 and go on up to 2000+ by the third book. They're not the only ones, but they're the ones I usually use when I'm teaching. If you'd rather use software, the best is CT-Art, which has grown into a series, or the "Chess Tactics for ..." series. Both were originally created by Convekta (the company that makes Chess Assistant) and I've seen them for Windows desktops as well as iPhones/iPads, not sure if they're around for other devices.
But the point is not so much to use those specific tools as to start loading your brain with patterns of how the various tools in your tactical tool box can be used. Learning those patterns well will help you spot them quickly when they show up on your board, and the goal is to learn them so well it takes next to no effort at all to spot the possibility of one existing; the idea will just pop up when you see the position. It's OK to have to spend time calculating to see if the idea actually works, it's spotting the main idea of the combination almost immediately that matters. It might take a while, and the effect might surprise you. I remember spending weeks working through the chapter on pins in the Informant's Encyclopedia Of Chess Middlegames, a few positions every day. The next tournament I was astonished at how many pins were showing up in my games; I suddenly could not only see the pins, but knew which ones I could really make use of and how.
Another thing to do for tactical study is to play over games from some early chess masters, from Morphy to Andersson, to Pillsbury to Colle and Speilmann, and on through players like Alekhine, Bronstein, and Tal. The idea is not to study the games deeply, but play them over like a "chess movie" and just enjoy the fireworks. Each player will drill into you the themes they've employed, whether it's Speilmann's use of the two bishops or Morphy's exploitation of time or Rubinstein's "feel" for the right place to set his pieces before the action begins. Just watching, you'll begin to soak it up.
Spending a lot of time on opening theory at this point is wasteful, but thinking about it a little won't hurt and can help you. The most important thing to remember about the opening is that your main task in it is to reach a playable middlegame, one where your tactical study will pay off. Feel free to experiment with many different openings; just don't go into a deep dive into any of them. When your opponent plays a line you haven't seen, take a few minutes and look it up after the game; don't waste precious skill development time preparing for moves you never see over the board. You have other things to work on. Your prime goal in opening study is to avoid traps (something tactical knowledge will help with) and keep from losing the game in the opening; so long as you're still playing at the end of the opening phase, you're passing the test.
At this point also spend some time on basic endgames, especially pawn endings. Learn the techniques of winning pawn endgames so well that when your tactis win you an extra pawn, you can confidently know you'll win even if all the rest of the pieces disappear. That's quite useful, because if your tactics have won you the exchange, for example, the simplest and easiest way to win is to give back the exchange to win a pawn, and win with the pawn.
If you're looking for a "time budget" I'd say 50% tactics, 30% endgames, and 20% openings for a study plan, and you could easily profit by adding time to tactical study at this point at the expense of opening study. It doesn't matter who comes out of the opening with a better position, after all, if you can outplay them tactically at that point and win the endgame. And as your tactical ability improves, you could take some of the time you used to spend on tactics and spend it on endgames. Only when you've mastered those should you start spending more time on openings.
Look at it this way, any non-fatal mistakes you make in the opening can be fixed in the middlegame, and non-fatal mistakes there can be fixed in the endgame, you can count on this being true so long as you can play those phases better than your opponent. Extensive opening theory knowledge becomes more useful as your opponents get better; at levels below 1800-2000, it's not very necessary. And if you keep experimenting with new openings, by the time you get to the point where you need to spend time in theory, you'll have a better feel for the middlegame positions you like to play, and are good at, so you'll have a better idea of which openings you'll want to study.