Convenient/ easiest way to update data packs in realms.

Every time I want to add or update data packs in a realm, I have to go through a lengthy process of downloading the world, adding the new data packs, and then adding the world again.
Now I have a realm with friends that's over a year old and it's very large, so I keep getting error 504 and we can't add any more data packs.

There should be an option to add or modify data packs directly from the realms menu.