What do non technical founders do during the product development stage?

Currently doing a hardware startup and I’m at the stage where I am waiting on parts to be made and shipped to me. There is a bit of downtime as I move from stage to stage. At some point in the future I will need to get funding, establish a market, all the usual stuff you’d do in a startup, but I don’t feel comfortable starting this now because I’m at the mercy of lead times and have no clue how long it will take to get a working prototype. I am fully able to bootstrap the prototype as is without funding. I’m curious about the dynamic between technical and non technical co founders in these situations… like surely you aren’t going around making noise for something that’s still a year out? Like should I just go live my life during these “dead times?” Some weeks are like 80 hour weeks and others are like 30 hours and in those weeks I just feel so lost, like what can I possibly be working on right now?