I've got physical issues, disabilities, and fatigue from those.
You wouldn't know if you knew me/met me because I mask and I'm only in front of people when I'm doing ok.
I eat most of my meals in bed, often scrolling my phone.
I have a dining table with a great upright comfortable chair with arms to support my body, but it's still exhausting to sit in it.
I WFH and mealtimes are my 'down time' so I need to rest and eat.
I have a young child, when they get home we eat at the table together, on occasion with the iPad watching something grown up like pointless, but mostly just chatting. I'm absolutely done by 6 when we eat, so DC does most of the talking, it's very tiring being the listener!
I feel for you op, I'm a lone parent but my child is chatty and eats well so mealtimes are pleasant, it's still a million miles from how I grew up and how I would have like my own family life to be like, but we are where we are.
You're going your best, everyone is an individual and so are families, I think people who's lives aren't touched by ND or disabilities/health issues are so blissfully unaware that life doesn't quite fall into place for those whose lives are impacted by the above.
When my little one was young I was told by a friend to read aloud while they ate, it distracts them enough to keep chomping, didn't work for me and my kid, but I can see it's a good way to keep the interaction going without being too draining. Doesn't just have to be kids books, can be anything, cereal boxes etc etc