Showing up for the checkups will help reassure her that she's not on this journey alone. For sure there are times when you will be busy with work or other important activities but, when you're able to, go with her for the appointments. Show up!
If you can't go for most of them, at least try and be there for the most crucial ones. And if that can't work either, have a video call while she's at the doctor's.
The other thing you should do is be more involved in baby shopping. It's really exciting to pick out cute clothes and accessories for the bundle of joy that's coming soon and you shouldn't miss out.
Shopping is very therapeutic for her because pregnancy isn't always smooth. Although going shopping with her might seem like something insignificant, it's really important.
Carrying an entire baby for months can be very overwhelming for your system. There's the backaches, foot soreness and just an overall discomfort that puts a strain on your joints.
What you can do is offer to give her massages often. It would even be better if you consult a doctor or researched ways you can massage her the right way to avoid any problems since her body is very sensitive.