Hi all, OP here. I just thought I'd update the thread as there were a few people on here saying they were in the same position and my experience might be helpful. Also thank you to those who gave helpful non-judgemental advice.
I originally posted because due to injury / Covid / moving home and an all-round crap time etc, our son aged 2 had become hooked on screens - iPad etc. this went on for about 6 weeks and I (as the main carer) was struggling to know what to do since he seemed addicted and was very very upset if you took them away.
Anyway long story short, we just put all the iPads in the cupboard and told him that "videos" were broken. We did this one Sunday afternoon after his nap. That evening he was really upset and crying but we persevered. The next morning he was asking for iPad but I arranged a really busy full in day with no time at home. At dinner time he asked again but I just said videos are broken and he seemed to accept it. From that day it's been nearly 11 days and we have had NO SCREEN TIME at all!!!!! Apart from one special thing I'll explain.
The main takeaway for me is just how radically this has improved all of our lives. I'm not exaggerating to say that his concentration has improved dramatically and did so in just a matter of 2-3 days. He sits and reads books with me with long chunks of text where he used to prefer simpler books or get bored quickly listening to longer paragraphs. He now actively finds piles of books to read and we can read for an hour!
I bought a few new toys for small world imaginative play as suggested on here and he has LOVED it. I am playing with him and being I present and he is talking in a way more sophisticated way than even a week ago. I've totally put my phone away in front of him at all times, and now only use it when he's napping or asleep.
At the park he is using his imagination so much - telling me a family of mini monsters live in a tree, and hunting for dragons in the grass! He would not have done this a week ago.
On Sunday afternoon DH and I sat down with our son and watched a "movie" on the TV. (Stick Man - 25 minutes). DS has the book. I was worried about opening the floodgates but I needn't have worried. He sat and watched it holding our hands exclaiming at all the dramatic bits - it was lovely to see. At the end we immediately switched it off. He went to cry but I picked up the book and we went through the story again. He was fully engaged. After that he did not ask for the tv again. It was such a lovely family moment. (I think YouTube has a lot to answer for as he used to just keep clicking to the next video before the first one had ended).
We have decided we are going to do family "movie night" once a week (25 minute things like the Gruffalo / Snail & the Whale etc), and that's it! No other screens and life is great.
My worry was how to phase out screens but I can honestly say cold turkey was tough for 24hrs, then slightly tough for another day but then he seems to have simply forgotten all about those videos he used to watch. My DH and I were saying that looking back it's like a bad dream and we can't believe we got ourselves in such a rut. We felt terrible but so happy to have changed things. I'm so glad I don't have to hear that frickin' cocomelon theme tune again!
Finally, I was worried about how to occupy DS when I need to make dinner, but since last week he has been happy to play by himself for 20 minutes which is great and another radical change.
I'm sure one day he will get his tablet back - perhaps next time we fly - but for the timebeing Im so happy we have stopped this, and actually pretty proud of myself for persevering as it can feel addictive getting the break while your child watches stuff.