Daily: Make time to talk. Touch base with your wife about the concerns or problems she faced during the day. She doesn't expect you to solve them, but she does need you to listen.
Weekly: Set aside a few hours for just the two of you. It could be a Friday-night movie or a Sunday-afternoon walk. Make it a standing appointment, or you may never find the time. Share how you're both feeling about this important time of transition in your lives.
Monthly: Plan a special outing together. A day trip can be very refreshing. Perhaps participate in an activity that brought you together or brought you joy before the children, whether it's hiking or attending concerts.
Annually: Get away together. Plan a romantic weekend trip at least once a year. If she likes surprises, make all the arrangements ahead of time. If she doesn't, plan the trip together. Either way, renewing your love will show your wife how important your relationship and your family are to you.