Time you already spent isn’t a reason to spend more. Some exits are wins.

Time already spent is gone whatever you do next. The mind treats it as an investment still waiting to be redeemed, which is how people stay in the wrong course, team or arrangement, adding months to a total they hope to justify later. The only useful question points forward. Leaving does not waste what came before, and staying would waste more.

Ask whether you would choose this today with nothing behind you. If the answer is no, start planning the exit instead of arguing yourself back in. Count walking away as a decision made well.