Hi sorry for the silly question but it’s my first pregnancy and I’m not sure how to go about this.

I’m a doctor who has just taken a year long surgical post (pretty much handed to me by the surgeons as I worked with them previously and they liked me) and I’ve just had my first antenatal scan. I’ll only be able to work half the year now and I want to let them know sooner rather than later out of common courtesy as they opened up this job specifically for me.

Any ideas on how to word it in a way that minimises their annoyance?

Edit: I don’t technically have a boss within the department so can’t organise a meeting with one particular person. Work is also hectic enough that telling each one of those that I will work with during these 6 months face to face isn’t really realistic. Thanks for all the advice though!:)