Something you need to consider even before all this, is what other people will do with the photos once they have them.
I’ve been through a similar situation recently and had to lay out ground rules for what people were allowed to do with the photos and where they could be saved. I made the condition that if they wanted to see photos I would only send them through signal. Past that point you just need to trust that grandma who downloads the image to her iphone doesnt have iCloud enabled by default and boom your childs image is now in the hands of apple. (Or any other auto backup cloud host)
Be prepared for some outright childish behaviour from people you thought were adults when you tell them they cant take their own photos unless they show you they dont have auto sync to iCloud enabled…
The only way to truly keep your kids image out of the cloud is to never let anyone else have possession of it to begin with unfortunately.
No problem!
We did the same thing, wrote out a small, basic set of guidelines outlining why we didnt want anything on social media or big tech clouds among a few other things.
Most family downloaded signal straight away which was a bonus to be able to possibly fuck off messenger in the future.
As long as you make it as easy as possible (within reason, dont bend over backwards if someone doesnt want to comply for no good reason) for others within your boundaries then it will end up being mostly painless.
Also congratz on becoming soon to be new parents! Sleep as much as possible now! Haha… Aha… Ha…