Nanamarch, you said that you're perfectly happy to do it all so why expect appreciation from your sisters? The world doesn't often operate fairly like that.
If they did things to help, they'd do it in their own ways and the chances are that you wouldn't be in agreement, or in control. It's far more stressful when siblings totally disagree about care arrangements.
It's also impossible to dictate to others what they should or shouldn't do and how they spend their time. Really, you are expecting them to be just like you and follow your directions. The resentment that causes can ruin future sibling relationships.
My sister tried to organise an every-other-day visiting rota (as she believed daily visiting was essential) and I complied for a while. My mother didn't appreciate my visits and complained strongly about everything, ordered me around and was very demanding, rude and hostile.
Obviously, I soon backed off and visited weekly, with a totally clear conscience. She wanted my sister, not me or my brother. (Of course, my brother visited monthly, if that.) Therefore, I did the paperwork and phone calls, organised whatever I could and kept very quiet about my strongly felt disagreement over arrangements.
I offered no thanks for my sister's self-sacrifice and endless fretting over the consequences of her own unwise decisions. It's ruined our relationship as I can only think of her as a spoilt and controlling individual now.
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well done you for all your hard work!