US Tax implications for dissolving or making a foreign corporation dormant?

I'm considering closing down my foreign corp (UK Ltd company) and switching to sole trader to alleviate some of my US tax headache, but was thinking to make the company dormant for a year first…

I plan to stop trading through the UK company at this year end (31 Dec 2021) and will operate as a sole trader from 1 Jan 2022. So, two questions:

(1) If I make the company dormant, will the same filing/forms be required as when the company was trading when I file next year?
(2) Is there anything else from a US tax perspective that I should consider before a) making the company dormant and b) before eventually closing it all together?

If it matters: I will not have any losses, assets are depreciated and I will take any remaining profit as a dividend this year (in 2021).

Thanks in advance for any help!

I can't advise on making an Ltd dormant and the effect on US filings.  But I did dissolve my UK Ltd in 2020 and I was glad to see the back of it.  Being a director of a CFC was complicated enough from a US tax perspective, but the Tax Cuts and Jobs Act of 2017 increased the complexities of my US taxes enormously over the last few years.  I'm looking forward to a relatively non-stressful filing for 2021.