How do I optimize loading speed for mobile checkout?

As a Shopify store owner running a fashion brand, mobile checkout speed has been my biggest nightmare. Every second of delay feels like money literally slipping through my fingers. I've watched countless potential customers abandon their carts, seeing our conversion rates plummet during peak sale seasons. My analytics show that mobile users are significantly more impatient—they'll bounce if the checkout process takes more than 3 seconds. I've tried multiple optimization techniques, but nothing seemed to consistently solve the problem. The frustration isn't just about lost sales; it's about understanding why mobile users are so different and how to create a frictionless experience that matches their rapid-fire expectations. My team and I have been obsessing over every millisecond of load time, knowing that in the mobile-first world, speed isn't just a feature—it's a make-or-break competitive advantage. We need a holistic approach that doesn't just marginally improve speed, but transforms our entire mobile checkout experience into something sleek, fast, and almost instantaneous.