Booting up startup (even the startup needs to be started, it doesn't start by itself) is a constant struggle. Almost every simple and basic sounding action/operation/step causes heavy reaction/resistance by the reality. The reality just doesn't want you to succeed.
I am lucky to run my startup with my own funding, and it causes me to be very responsible with spending.
Finding PMF is the most mysterious thing I have ever encountered. How is it possible to sell anything in this world? People who can sell are the most valuable people in this world.
I guess I have had "burnout" so long, that I cannot anymore feel it. It has now become the feeling of accepting and observing the reality as realistically as it is. "It's just life.", says my friend when reality slaps/hits on face.
Technical problems for technical startups and for everyone else, normal life.
Customer acquistion, individual case of PMF? Mysterious.
Co-founder issues. Hopefully you can resolve things out, because it is the only good way out for the co-founders and therefore for the company. You need to have a real talk.
Runway stress? Time is money (because of expenses), so do things now that leads to making deals (= your product/service + marketing/selling). Do them now. Now. Do it.
Yeah, the struggle and pain is hard. So hard. Let us wish power to for the survival of each other. Good luck, and don't fuck it up (message directed also to myself).