Fuck that OP.
I’m a single parent - have been for years - to 3DDs. I’ve managed a wide range of illness by myself, because I’m default parent, because I’ve had no choice, because it wasn’t serious enough to call my ex/his family for help.
My ex works a high level, high pressure job where time off is viewed very negatively.
I’ve crawled around on the floor due to being unable to stand up due to a severe ear infection, after my ex had been over to help. He made dinner for DDs, drove me to the GP, drove me to the Pharmacy, made their packed lunches, did a load of laundry, bathed them, put them to bed. Came over in the morning to get them ready for school. When he couldn’t do it, ExMIL came over and did it. It was a week before I could stand up without losing my balance and took three rounds of ABs to get rid of it.
When we all had a sick bug - DDs were 6/4/1 - my ex took time off work - almost a week.
On the first day of us all coming down with it, I rang for help at 10am. There was zero chance I could manage all four of us being that unwell. I’d never seen anything like that. I’ll not into detail because it was truly grim.
He said he couldn’t leave work just yet but if I wanted, he’d ring his (relatively young, retired A&E Nurse) Mum and ask her to come over.
She did, armed with supplies and got stuck in. Ex arrived around 6 hours later. He stayed over. Around 4am he had to call ExMIL again because I had a fever of 41 and was delirious, she drove me to A&E and stayed with me.
Turned out I had Noro (DDs probably did too but they didn’t have samples taken). I was in hospital for around 36 hours before being sent home, once my fever was under control/I wasn’t dehydrated.
There’s a few other examples - but my point is that, when it’s an emergency, even my ex and ex MIL can step the fuck up, go out of their way, take time off work - why can’t the man you’re in a relationship with do it?
Demand more for yourself OP.