Also make sure you follow these tip after C-section http://app.babychakra.com/feedpost/180647?ref=SEEM26882&

Don't worry there won't be an issue . keep yourself hydrated and just relax . Also get your hospital bag ready with your essentials and all the best for your surgery

You can consume coconut water, lemon water and regular water and increase ur aminotic fluid. There will not be any problem. Relax, have your hospital bag ready. all the best for your surgery.