Really good news, Lolle! You’re so lucky being able to see them out and about.
Good that you are providing water, too. Re. the food, it’s best not to put it too close to a nest – wouldn’t want to attract any unwanted visitors, too close, but it sounds as if it is a little way away, so that’s fine.
It sounds as if these little ones are fairly well grown by now, but you are right to be cautious around nests, in general. Mother hedgehogs can desert their young if they are still very tiny and are disturbed.
Good luck with them all. Hope you continue to enjoy watching them.