Sounds like you are learning as you are going..!! It can feel pretty tedious at this stage but keeping regurgatation at bay is so so important. As this just causes further swelling – feeling like 1 step forward 2 back…!!!
Try sucking some ice to see does this go down better – it can also help with inflammation. Some people find warm/hot drinks better too..again try these and see how you get on… it can really be a case of trial and error at this stage. You could even try freezing the protein water and sucking on this to see if it is more palatable – some things are worth a try hey
Hopefully you can get to speak to someone sooner like you say. Anything else please do shout, we will try and help out the best we can
Big hugs, things do get better