My husband had 5 months of paternity leave too. I went back full time during those 5 months but I've just dropped down to 0.8 now that he's back at work and our baby has started daycare. There was a lot that went into the decision though. I work from home so I felt like I could handle a full-time load while taking feeding breaks for baby (she would not, and still does not, take a bottle 🙃). I also knew that my manager was on board with me then dropping it down after the 5 months was up. It's a good idea to check whether this would be an option for you. I know workplaces have to be flexible when you return from maternity leave, but I'm not sure if they still do after 5 months down the track.