Have a great camino. Check the weather every day for temperatures. If it is hot I would recommend 3 liters of water, buy food too. I am sure you know that there are lots of stages with nothing from morning until night. Freeze a couple of liters of water to keep your food fresh. If you encounter rainy days you might be getting your feet wet as there are lots of little gullies early on. Nothing that will wash you away haha. Enjoy the pigs and the few zillion olive trees! It will be a very different experience. Plan ahead every day so you know how far you need to go, water and food. Make sure the albergue you want to stay in is open.
Buen Camino pilgrim.
P.S. Hope the Camino office gives you good information. They were really nice when I was there in October but didn't have any information I didn't really know about already. Gronze.com does an excellent job of keeping up to date on albergues that are open/closed.