How do I raise my tactic trainer rating to 2300? I'm currently a 1600 USCF with a tactic rating on chesstempo.com of high 1600. My chess.com tactic rating is 1600 as well. Though my best tactic rating has been high 1700 on chesstempo.com. The problem is that my tactic rating always oscillates between 1600 and high 1700. I can never reach higher tactical levels than 1700. I practice 30 minutes of tactics every day as my chess coach recommended. However, I haven't seen any improvement. Any advice to raise my tactic rating to 2300+?
As noted in the comments, 2300+ tactical ability is a ridiculous goal to aim for, if your current level is 1600-1700. This will only lead to disappointment on your part, as improving your tactical level to 2300+ will probably mean that you will have to raise your overall playing strength by maybe 300-400 rating points. This takes years to accomplish, unless you have lots of time, resources and talent, in which case it will probably still take at least a year.

A suitable primary goal is instead to raise your tactical level by roughly 100 points. Depending on your situation, this can be done in a few weeks. However, just doing tactics problems on problem sites will not accomplish this very efficiently. Exercises are good, but not doing anything else will not improve your play by much.

I suggest you read a good book about tactics if you haven't already. One that I enjoyed very much was "Understanding chess tactics" (I think later editions of the book is called "Chess tactics from scratch") by Martin Weteschnik, containing many good examples and clear explanations of themes. However, it's not the only good tactics book, and if you have a chess coach, that person may have some suggestions on what to read.

You'd probably also want to play against strong opponents (1800+ at your level), as they're very likely to be better than you tactically. This will be good for your overall play and toughness at the board, which goes hand in hand with tactical ability.