On Liquid Diet But Not Hungry At All?

im on my 5th day of liquids pre op but not only am i not hungry i have no want to eat at all i cant get the protein shakes down at all no matter what the brand is and believe me i have tried a ton of them i have tried the unjury differnt flavors also to no avail i bought a container of the unflavored unjury and cant get that down either .. i have a pretty strong gag reflex and i cant handle things my "brain" tells me is nasty lol i know that terrible but at this point i feel like id rather starve then drink or eat that protein and i cant figure out what to do i have literaly had 4 out of 5 days where my calorie intake was under 1000 and 2 days of under 500 i know its not a good thing by no means at all but i dont have the want to eat or the hunger i know my body when i get nervous or stressed and i always react this way but usually i snap out of it rather quickly but being on 2 wks liquid before and then the whole afer diets im sooo worried about not ever getting protein down among other worries and i just dont know what to do i keep trying them in differnt combos adding differnt things ect ect and nothing is working the best i got right now is im drinking tons and tons of milk and eating pudding and yogurt which is better then no protein at all but still not very good!!! any suggestions or anyone with simliar issures now or in the past ? imput welcome!