Hi @Maddy ,
Welcome to our forum!
Based on my research, i found that we can only schedule focus time every day but not for some selected days, which is the same result as yours. I'm afraid that it's by design.
Please kindly understand that many functions of our current products are designed and upgraded according to customer feedback. At present, what I can do for you is to submit feedback for your request and I have post here. It's suggested that you could vote for it. Hope Microsoft will notice this in the future. Thank you for your understanding and support!
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