I haven't had the DS, but wanted to let you know there is a forum here for DS patients. Post a thread there and you should be able to get advice from others with the same procedure as you. I had the sleeve and for me I felt very good by about 4 days post-op and continued to get better each day. I would just keep sipping your fluids maybe change the temp of what you are drinking and try different flavors until you find something that stays down. Savory broths worked well for me.