The comical aspect of all this - is that number is treated like gospel. Like it is fact.
But I have news for you - by itself - that number is completely meaningless.
Companionship - the real deal - is like sex - not subject to quotas. Trying to impose a top down quota is unlikely to produce a good outcome.
I saw this - in a marriage that was unraveling. The husband disengaged - the wife self righteously demanding more time together as part of marital privilege.
M2 goes shopping for house stuff - I don't go to make 'quota' for the week. Or to avoid an angry reaction. Or to increase the odds of getting laid.
I go because - somehow - rolling towards thirty years - whatever we are doing - is fun because we are doing it together. Kayaking, xword puzzling, hiking, shopping - each just presents a different set of 'props' to play with.
It's good and healthy for people to try to find stuff they like doing together. Inspire your partner to WANT to spend time with you and they will.
Many couples make this happen. Even with 5 kids. Of course, many don't- which is why only 1 in 5 marriages are considered happy and healthy where the top 4 emotional needs in marriage are met: conversation, affection, recreational companionship, and sex.
Dr. Harley found that the 15 hours a week meeting these needs is so important for marriage that he won't agree to counsel a couple if they won't make this time possible. He found that a successful marriage is very difficult without it.