First off, Congrats!!!!!
Second, as others have said, you'll likely have to temper your expectations - no more brewing every week (presuming you do so now...) and being out at all hours all the time with homebrew buds.
BUt it still doesn't mean you have to give it up entirely. Some of this (most, maybe) will be repeated from above.
Assuming you have space, make sure you get a few brews in before due date (be sure there's plenty of leeway in case Junior decides to make their appearance early.) |Maybe even plan for something that will take longer, like sours, or BBA brews; packaging is easier than a full brew
Assume that you won't get any in the first few months.
But once things settle down, you can probably get back to it to some degree. |Of course depending on your rig, setup, and brew day schedule, there's still a lot of downtime during brewing. make sure you're not holed up in the brew area the whole time.
Once my little guy got onto a schedule for bed time and so on, I could get a mash going, get him to bed and be back in time for mashout. Mill and measure early in the day, get the water heating, then back up for bath time, back down to mash in, back up for books and lights out, then back down for the rest. Clean that stuff as you go.
Later on they can "help" in parts of the brew day.
But everything does hinge on how much attending the little one needs, and how much help Mrs Mattman needs.