how to stop them 😓😭❤️

I have two amazing fur babies 😍for the past like 2 years and recently they have started physically fighting each other to the point they don't want to stop unless I throw water at them and grab them fast away from each other 😭I'm currently 37 weeks and they give me scares Everytime I just don't know what to do to make them stop fighting they got along this whole time🤷🤦🏻‍♀️😞