I cheated with DS.
Around this age he was waking once or twice a night for feeds.
I made a habit of always having his bottle in the same place in the cot, and his cot was right next to my bed, so the second he started crying, I'd reach out an arm, grab the bottle and plug it in.
Neither of us would really wake up, so we'd both drop off again quick.
He first slept through a week before 6 months.
I say slept through... When I woke early hours in a panic cause he hadn't woken me for a feed, his bottle was more or less empty... He'd just woke up, grabbed it over and fed himself.
Unfortunately, there's no telling what they'll do beforehand. Some of it will depend on bottle v breast, most of it will just depend on baby. If it gets to time for you to go back to work and LO is still waking in the night, see if you and OH can work a system where you do first feed, he does next feed, or, you feed Mon and Tues night, he feeds Wed and Thurs, or whatever works for you guys.
Again, that will depend on bottle feeding, even if it's expressed breast milk.
It's pretty much a wait-and-see, I'm afraid. Xx