I am in a slightly different situation, but somewhat similar.
DH had to work abroad (or likely face redundancy) in the financial crash 50% for 4 years - he left on the 12 noon bus on a Sunday, was away for 2 weeks literally on the other side of the world, got home at around 1pm on a Saturday, worked at home for 2 weeks and he had 1 full weekend at home per month. While DD was 5-9 years old.
And last year, I got an opportunity to go abroad for a role I have always been interested in - in the middle of DD's final year of school and run up to exams. (And DH's role is now less mobile). So I went solo and travelled home as much as possible (9 weeks initially but then had a 2.5 week Christmas break, mostly every 4 weeks or so after that). And since DD exams were finished, both of them have come individually to me a number of times, and now DDog has found a new family to love, they can come together. Except that DH will be at home until the middle of December to be there for DD going home from uni in another overseas city in Europe for national team hockey training to go to a tournament in December...but both want to come here for Christmas. And I will be home at least once in that period.
Being away this time is much easier as the tech is so much better. DH and I are sitting eating dinner "together" most nights, over FaceTime. The time difference and the hours I work mean that works well, and we catch up on our day and sometimes even watch a programme together while on a call. Email each other (as we used to do at home occasionally) about bills etc. Transfer money much easier through internet banking and Revolut.
But it is hard both being the person travelling and the person who stays home. When I was the parent at home, I got an au pair to help with school runs (I was still doing a more than FT hours job) and we had a cleaner for part of the time. I was very organised anyway but had to be ruthless on laundry, organising meals and planning ahead. I wasn't good about making time for myself (I officially had babysitting from AP but they tended to go away for weekends, which was when I could have made time for the cinema etc), but I took the odd day off just for me.
The one thing DH found odd was that I learned how to be an independent person and the one running things at home. And that was when we had a routine for when he was away and I did tend to step back again when he was home - but I was still more confident than before he went as I had to manage whatever happened. Which included a DGP passing away and all that went with that (my DGP), a couple of big household repairs that he normally would deal with, and doing all the day to day running of the house, cleaning, cooking, shopping, laundry, afterschool clubs etc.
It was hard, but we knew it had to happen. And DD got very used to the slightly different (some bits more military, some bits more lax) regime when he was away. She talked to him most days even on the dodgy video calls we were able to do - as I said, now I can be part of the background chatter going on in the kitchen as the 2 of them are chatting away at times and chime in almost as if I was still there.