Right Start question

My 1st grade son had been using and loving Right Start B this year, but during a recent family crisis I gave him Beast Academy 2a to do because I just didn’t have time for RS. I need to help him occasionally, but he does most of the workbook on his own. He loves it so much that he picks it over RS, which he used to ask for every day.

Now I’m wondering if I should just let go of RS and let him do BA and some fact practice. He can finish 2a this year, with some fact practice games to fill in. And then next year he could do 2b-c-d plus fact practice.

Or would there be a benefit to continuing to fit in RS twice a week? Tho that would create work for me because I already had to condense lessons for this kid and if he’s doing BA also I’d need to condense even more, but without making his math lesson too long. If I did continue both for now, would it be best to do the Subtraction lessons in RS C before dropping it? We’re using 1st edition.

… I just went and redid the RS placement test for him and they recommend level C. He’s only done half of level B, but he picks things up quick.