Turbotax balks at 1095-A info input

When I'm entering the data from my government subsidized healthcare plan, which is contained on Form 1095-A, I'm asked to fill in three columns of data (Columns A, B and C). Because my income changed part way through the year, I didn't collect any subsidy for months Sept-Dec. Because of this, columns B and C on form 1095-A show "0.00" for months Sept-Dec. 

 

However, when I go to input this data in Turbotax, I keep getting an error message that says Column B "must have a value greater than 0." The program won't let me proceed unless I remove the zeros and put a dollar amount in the column. 

 

Any suggestion(s) on how I should proceed?