Ahhh pear that is lovely, I often think that the trade-off for barely getting to speak to DH some days is that I get to see how amazing a dad he is. It all deepens those bonds - I love him as the father of my children as well as my partner. It sounds like your DH is doing a good job of stepping up and helping out, long may it continue!
Very frustrating about the jabs, but I wouldn't worry too much about holiday. DS has been going swimming since after his first lot and he's been fine. Annoying that you have to faff about sorting it out when you get back though! And fingers crossed your car isn't too poorly and can be fixed up with reasonable ease (and not too much money!). Fwiw re coping - I think you come off as doing a bloody good job! Your kids are fed, entertained, looked after, loved - you're ticking all the important boxes here, you're doing fine. Agree with what re changing expectations. And I also think that in a few years' time (when things are much easier), you won't look back and think 'oh I was so lazy, I should have done more housework' - you'll look back and think what a fucking trooper you were and how well you did in tough circumstances, and you'll give yourself a little secret mental medal for getting through 👍 Cut yourself some slack 
Biscuits preaching to the choir here I'm sure, but have you tried different styles of bottles? DD was a bottle refuser til we finally worked out that she would only accept 1 certain type. By which time we'd spent hundreds on rejected bottles, but at least she didn't starve to death when I went back to work 
DS will take a bottle no problem, but he's had them much more regularly - I knew I wanted him to take a bottle as necessary, so he's had one every week or two since a few weeks old.
Well we finally succumbed to the lurgy here; both kids absolutely streaming with cold. Coupled with the tail end of the 16w sleep regression that we STILL haven't sorted, and it's been a tiring few weeks! DS isn't a screamer but he's been howling his head off in the middle of the night - I actually woke DH up the night before last, for the first time ever. He drives a long way for work so I never normally wake him, but I could feel myself completely losing control and needed a break for a little bit.
Last night was much better though - he woke about 10pm last night for a feed, so I gave him a bottle (as breast seems to make him really windy at night for some reason, I think maybe he's a lazy feeder when he's tired) and he slept til 5.30 (!!!!) so definitely trying that again tonight to see how we get on.
4 month jabs done this morning - told a white lie and said he was fine, when he's actually still working through the end of this cold, but I figured if I waited for 100% health, it'd be spring before he got them. He was all smiles to the nurse right before she did them, broke my heart, my poor trusting baby boy 💔 All done though, lots of sofa cuddles scheduled for today and no more jabs for a while now!