Aw man, this takes me back. No, it’s not your life now, it’s just your life in this moment. It waxes and wanes, and I promise you’ll have a new-found appreciation for childfree holidays/ breaks when they do come along….which they will!!!
But, in the meantime, I’d say by all means try and settle him, but if youve been locked in a dark room for hours on end and he’s still not playing ball, switch it up a bit, shift your focus onto something else and take baby along with you. Go for a little walk somewhere, take him to see/ talk to other people (e.g. your IL’s). As other posters have said, sometimes it’s not that they don’t want to help, they’re just not sure how to.
One of the LEAST stressful breaks I’ve been on with mine was actually when I went away with a friend and their little baby. Because we were in the same boat child-wise it was at the right pace for both of us, there was no sense of missing out because we both had them to put down in the evenings…but when they were down the bottle of wine was open, we had a lovely dinner and set the world to rights. Felt like a regular holiday again :)
Point being, it’s all expectations and comparison to what you did before/ others in the group are doing. I really do think that, if there’s a little child included in the holiday, everyone has to pay it attention and take a little turn so nobody feels like they’re doing all the work. And I’ll bet your IL’s will understand that. When your DH leaps into action it’ll be so different too, not just because he’ll be there to lend a hand, but because he’ll be able to be more direct with his own parents about how he wants the holiday to be, for all of you. Hang in there, but get out and about! Your baby will probably like it/ be distracted :) AND, as unlikely as it seems rn, having a wee pal to keep you company on holiday - one who’s your best friend before anyone else - will feel really special :)