Why would I not be getting an HSA tax break this year if I contributed almost the same as last year?

It depends on how you made the contribution to the Health Savings Account (HSA).  

If your contribution was made through payroll deductions, then you have already received your tax break for contributing to the HSA.  Payroll contributions are made with pre-tax money and are not deducted on your tax return.  These are also reported on your W-2 in box 12 with code W.  You do not need to explicitly enter them into TurboTax except for entering your W-2 and then completing the HSA section of your return to verify your eligibility to make the contribution.

If your contribution was made by you directly to the HSA account using after tax funds, then you will get a tax deduction for those contributions.  It is reported on Form 1040 Schedule 1 line 13.  This contribution is also reported in the HSA section of your return.  

If your method of contribution changed from one year to the next, the actual impact on your tax return will change.