Kid's activities throwing off family schedule

So looking for advice. I hurt my arm and waiting on if I need surgery. Meanwhile I'm down to one arm with a kid, toddler, baby all at home with me. It's been a challenge everything takes much longer for me to do between the pain and using one arm.

My oldest is in camp for two hours a day three days a week. He loves it! The issue is it take me so much longer to get the toddler and baby loaded up to drop off and pick up. Also in their nap times so they are late taking a nap and I'm waking them to go to pick up.

I don't have any other help. I have such guilt because I need the other kids to nap for my sanity. I also want my eldest to have more fun then what is at home especially with my arm situation.

Three days a week our schedules are all off and two of three kids are crabby.

There's no other programs for my son at his age of five in our area I have checked. So if he stays home there isn't something else going on. Because of my arm I've had to take them to so many doctors appointments too so that isn't helping their fun or learning. I schedule playdate but it isn't frequent enough and taking three kids anywhere with one arm brings me to tears.

I kept the eldest home from camp for two days and the other kids were great but he was missing it.

Is this just the norm?