Управление зависимостями в проектной работе

Me and my co-founder run a small agency. We work with e-commerce brands - content, ads, websites, the whole brand side of things. We don't do monthly retainers. We charge based on deliverables. X amount for X pieces of content, X for the website, etc. Felt cleaner than a monthly fee for work that isn't always consistent. But here's the problem we keep running into. We send a client a script. Two weeks go by. Nothing. They haven't shot the content yet. We're just sitting here with everything ready, edit timeline planned, posting schedule mapped out, waiting.. Another client we're doing 16 product designs for. Once those are approved we build the website. Once the website is done we start social. It's one long chain and every link in that chain depends on them moving. So a job that shoul…