Being a development project manager is laughing at developer jokes with developers and then laughing at the developers with the business folks

How the hell do I manage time as a dev and a project manager (sorry I'm new to the role of doing both and everything is hitting me all at once, any advice is appreciated)

My friends don't understand what it's like to be a dev so when I ask for times/arrangements they think I'm just being a prick about it. Sometimes I ask for specific times because I have to do pull requests and what not and I want to arrange it to maximize little downtime but because none of these guys are Devs they don't understand. How do I help these guys understand that me asking for specific times isn't about me being a prick, it just has to do with work because when I tell them that they don't get it