So can I give my 6 month old diluted apple juice? Since we're trying to get him on a schedule and if…

So can I give my 6 month old diluted apple juice? Since we're trying to get him on a schedule and if he drinks a whole 5-6 oz bottle the Peditrician told me if he's crying an hour later it's not hunger. But the bottle is the only thing that helps. The bottle is a comfort thing. Like a binky but he refuses those. So instead of giving him more formula can I just give him a little bit of juice? It's already so diluted but maybe I can add a bit more water?