Your original text is grammatically correct! Here’s a simpler rephrase, with a bit of fun added:
"Doesn’t the weekend feel super short these days? 😢 I’ve got an idea: how about we start a petition to add another day to it? Until that happens, let’s enjoy the weekend we do have! Whether you want to kick back and relax, recharge your batteries, or get ready for the week ahead, now’s the perfect time. Take care of yourself, and if you