Yes, I would repeat in 10 days to 14 days and then just give them plenty of feed/protein and maybe redo fecals 2 or 3 weeks after last treatement
Also if you are far enough south, Liver flukes can look like barber pole eggs and cause anemia and does not respond to cydectin, only ivermectin plus given every 10 days for three treatments injected will great those.
Also, tapeworms can really run down an animal, but since you are saying anemia as well, tapeworms normally would not cause anemia but can keep the animal in pour condition. Again, cydectin does not treat tapeworms. yes, cydectin is great for berber pole worms.
Coccidiosis can keep an animal run down and can cause anemia.
I know it gets tricky.