Expenses when closing self-employment business

For many years I've provided a writing, editing and research service (no employees, no physical assets, and without a separable home office). I decided to stop, and finished my last contracted work at the end of July.

 

  • I assume that I can deduct most expenses before that date, including (for example) six months of long-term care insurance. Do I also split up Medicare premiums, or should I just treat those all as Sch A? (I'm not sure why, but I used Sch A last year.)
  • Do I include things like tickets for conferences that I paid for before I finished, but the event occurred afterwards?
  • I had net operating losses during the past couple of years, and probably will for 2024. Am I allowed to deduct those over the next few years, and if so, how? (I know there's a limit on the amount per year.) I can't tell if TT is even tracking my NOL.