You might try giving it some Sav-a-Chick or Rooster Booster or similar supplement. We had one last month that had a tough hatch and wasn't able to stand right away. I dripped a little Booster along its beak with my fingertip every chance I got for a day, and it was fine a day later, able to keep up with the week- olds just fine.So I have three and now the fourth one has pipped. I am a little concerned about one of them. For a full 24 hours it did not open it’s eyes after hatching by itself. It doesn’t really stand up straight it mainly lays down. It does look a little smaller than the others. I really hope that it will be OK, but I don’t have a good feeling about it. At least it’s finally opened its eyes
I will admit here that I also carried it around in my cleavage for a while to keep it warmed up and handy to feed.