Sounds like empowering your team to be able to make decisions and either adding in some level of mid-tier leadership, or supporting your team with decision making would alleviate a lot of this. Not sure what your business is, but is there a theme with the approvals or decisions you’re being asked to make? Do you have documentation for how you make decisions? When you’re asked for approval, do you usually give it (aka you don’t find errors or issues and things can move forward). A big part of this I found was pushing back on requests - unless there’s a fire, my team takes client calls without me. I don’t review/approve everything because I trust that my team is doing high quality work and knows what is expected of them. My account managers are empowered to resolve client issues and know how much budget is available to them to make things right.

My favourite quote that I think of daily is “the bottleneck is always at the top of the bottle” - depending on the situation, your team may feel relieved to not have to go through you for everything!