I learned a technnique which does help me a lot.
It is three phrases: Catch it, check it, change it.
Try to focus on your reaction to things. Become aware you are getting annoyed (caught) then ask yourself if it is serious (check) then think about how to react differently (change). If it isn't serious then shift your focus elsewhere- look out of the window, have a cuppa etc, even change the subject 'oh look what just flew past the window!'
If it serious then speak out but in a way that focusses on the issue. Challenge DH. 'Why do you think putting wet clothes with dry clothes gets things dry?' Put the onus on him to explain his behaviour in a logical way.
I do this with my son who has no idea how laundry works. Sometimes he just says, 'Give me time to come up with an answer!' because I think men sometimes just don't know or even think about why they do things.
Slowly my son's behaviour changes, and so does my reaction.
I find this brings issues out without emotional baggage
getting in the way.
I wish you luck and hope you both have an enjoyable break.