DD is 21 months, usually bath at 6:30pm and in bed by 7pm ish.
DS is 7 weeks (breast fed), knackered by 6 / 6:15pm and if there's any delay on that, he gets over tired and needs hours of rocking and holding to settle and keep him asleep. It's also touch and go whether he'll settle at 6:15pm so can be a bit demanding in terms of hands required!
Go for it!