From the description of your situation, there's no single-step answer.
Phase 1 has to be to recover some balance & perspective: take a week off, and if/when you resume work, cap your working hours to a more traditional schedule to allow variety and recharge time in your days/weeks.
Phase 2 is to use the balance/perspective/distance to evaluate whether the partnership/team is right, the development goals are reasonable, and the schedule expectations realistic. Abandonment of a project that hasn't matched original hopes is always an option.
If you choose re-dedication to the same project, be sure you know what will be different. You likely need a technical collaborator, for both mutual-review and task-sharing, far more than any amount of 'encouragement' from someone whose skills aren't applicable or even yet needed.
Phase 1 has to be to recover some balance & perspective: take a week off, and if/when you resume work, cap your working hours to a more traditional schedule to allow variety and recharge time in your days/weeks.
Phase 2 is to use the balance/perspective/distance to evaluate whether the partnership/team is right, the development goals are reasonable, and the schedule expectations realistic. Abandonment of a project that hasn't matched original hopes is always an option.
If you choose re-dedication to the same project, be sure you know what will be different. You likely need a technical collaborator, for both mutual-review and task-sharing, far more than any amount of 'encouragement' from someone whose skills aren't applicable or even yet needed.