Floyd,
Appreciate the thoughtful response to my suggestion. I’m familiar with the expression “a month of Sundays” now that you mention it—though I haven’t used or heard it in, well, a month of Sundays!

So it just didn’t register with me as I listened to, read, and commented on the lyric the first time. But your explanation makes perfect sense and I agree “month of Sundays” is more singable than what I suggested. Again, good luck with this one.
Regards,
Deej