Was it marketplace insurance? If not, there's nothing to do unless it's a state requirement. If it was marketplace and he's claiming you as a dependent, it gets reported only on his 1040 (form 1095-A). if he's not claiming you, it between the two of you as to the allocation for each month. Columns A, B and C for any month must use the same % but different %s can be used in different months.
