Hey congrats on the pregnancy :) Yes I can understand you'll want your husband to be around more, now that your little one is on the way and it's such a special time. Since he is busy, you could try and schedule your doc visits in such a way that he too could join in, especially the sonography sessions where he too will be able to the baby's heartbeat! Also, if you're planning on making a nursery at home, try and sit with your partner over the weekends or when he is at home to discuss plans. Or you could source images from the internet and send him, so that he can browse on the phone even when not at home. You both can always go shopping when he has some time. If he is too busy, you can also share with him some e-books about parenting that are especially for dads, so that he can start getting prepared even if he is busy.
Whenever he is around, talk to him about how you feel, what physical changes are you experiencing. Always make sure that you go with him to visit your doctor. Going to the doctor for regular check-ups will make him feel part of the whole journey. Once in a while if he misses it, is fine. Discuss everything with him, right from the baby shower to making a nursery. There are innumerable ideas on the Internet that you can explore. On and off instead of doing things all on your own, give him the responsibility of getting things done for you, for example; getting your medicine or getting a big-size dress. When he gets time go for outings and take a stroll hand-in-hand and talk about how things.