How will this year's tax returns affect Medicare premiums?

My Medicare premium payment went up from $134 to $189 this year, due to the fact that calculated into my 2017 taxes was a one-time lump sum retirement payment. Therefore, our adjusted gross income was above $170,000 for just one year — 2017. We just completed our 2018 taxes and our adjusted gross income is $125,000. Can I get our Medicare premiums adjusted back to $134 for the rest of the year?