What hasn't caught up is socialising boys to expect that they can and should aspire to the same involvement in parenting their children and running their household as girls.
Until "women's work" is aspirational it's a hard sell.
This.
And also change the social attitude around divorce/single motherhood from "she didn't pick the right man" to "he wasn't a good husband"
Start asking men whether they can/should "have it all"?
Use it or lose it paternity leave for men
More punitive statutory child maintenance for men who barely see their kids, enforced through tax returns not paye
Antenatal classes about how to look after babies for men - and time off work to attend
More role models of men in traditionally "womens" roles in media/on TV etc