Donut Tutorial

as most people have done, I am following the donut tutorial. everything was going fine, but when I started UV Mapping in order to get the condensation, there was a major issue that I do not know how to fix. the coffee inside the liquid + the texture have changed size and looks like the cup is several inches thick. I am unable to command + z it, how many i do not know. any experience with solving these problems would be incredible. Thanks!