Time is a resource more valuable than money because you can't get more time. How many hours can you work in one day? How many tasks are on the list? Prioriti

Time is a resource more valuable than money because you can't get more time. How many hours can you work in one day? How many tasks are on the list? Prioritize those tasks and go over the list with your co-founder. Tell him / her how much time it will cost. Is it still worth it? If your co-founder doesn't understand coding, then he / she should understand cost of resources, especially the resources of someone as critical as a co-founder.