Looking for advice

Hi everyone, so bare with me while I explain… I am a mother of 3 under 3, and a stepmom of 2 older boys (in their 20s). I run two small businesses with my husband. My husband also works another full time job. We barely get any intimate time together because of how much we work. (Aside from the kids, we have a lot to support financially). I’m friggin tired. Mentally and physically, by the end of every single day. When we have time together, it’s usually in the middle of the night or I have to wait up until the kids go to sleep (which is usually by 930-10pm. When we go more than 1+ week without sex, i feel tension on both our ends, from frustration of not spending enough time together. If it goes more than 2 weeks, we just talk to each other for work and there’s nothing extra. I don’t know how to handle this or what to do to make it better. I want to do more with him, I just don’t even know how it’s possible without sacrificing any sleep I can get at this point. Thanks for any and all advice 😩