Do you have a cake pan you can put the food and water in and put the board back and let them stand on it to eat and drink if they are too small to get to it other wise. That will keep the bedding drier Iuse scrap 2X4 etc to use as steps and such when I have babies Looking back at you pic you can leave with board under dishes and just put another board in front to let the littles stand on. You can show them the food and water if they haven't found it yet.
Ok, I read your additions too. I put the board in front of the dishes with it lower than the shavings so that it makes a step. This is temporary as I know they grow fast.
They must have found the water because their nares aren't as dry and there were tiny water droplets on the bin where they huddled.