If you are overwhelmed and working too many hours and still not keeping up, you aren’t doing your leadership job well. If you have employees, get them to help you. What you may find is they want to help you, if you ask or let them. Perhaps they never thought of doing important things that are now on your plate, because nobody ever believed they could, and never asked them.
A leader’s job is to bring out the best in people while accomplishing the goals of the organization – not to do all the work, or even a disproportionate amount of “the work” themselves. The team members do the work when trained, empowered, and supported.
Get others to help you more. They can, and want to.
I admire leaders, such as you, that have the ability to see what their people can do – and leverage their willingness, desires and abilities to contribute to the overall growth of the organization.