instead of trying to focus on more hours, i think you should make the best of the time you get. your baby may not understand how long you spend together, but will definitely remember and love the happy and fun moments. start making the most of holidays and weekends, plan small trips including day trips, go for picnics, play sports together, read together, paint, sleep huddled in each others' arms, go out for food and do all those things that will help you spend fun time together.
Quality time is important. the duration, or quantity is not so important. Maybe you can put your kiddo to bed. it's really nice to read a book, or even spend 5 minutes hearing your child share their day with you. it may seem insignificant to us, but it's totally significant to them.
Spend all the weekends with the family like road tripping, picnic, movies, malling, etc.
Spend the rest of the day when you get home with the. Kulitan nights are the best!
Spend more time during off days