Try a roost stand (or equivalent) and external keyboard and track pad (I use the smallish apple ones). This has saved my posture when working from outside my office. It’s not the equivalent of the home base setup but it’s good enough that my neck isn’t screaming at me at the end of the day

Another vote for a folding stand + separate keyboard and mouse at desk-level. I'm always working outside the house, and once you can adjust to working on a single monitor it's been great ergonomically.