Would it be acceptable if I just omitted the comma after 'mothers' and the other comma after 'stepmothers' in the given sentence?

Would it be acceptable if I just omitted the comma after 'mothers' and the other comma after 'stepmothers' in the given sentence? Please enlighten me on this matter. Thank you.

Please ask the biological mothers, or stepmothers, of your friends to visit Grandma's garden.