Totally get that—breaking work into small, testable chunks helped me too; combine that with using Shopify’s native features and vetted apps to avoid reinventing the wheel, and you’ll save tons of time—also having a checklist for required integrations (payments, shipping, analytics) prevents scope creep, so if you want a quick reference on structured approaches and examples of fast-start templates and modular customizations check this:
https://sam-solutions.com/services/e-commerce/shopify-development-services/ which outlines practical steps teams use to speed launches while keeping things scalable.