Girls, hello! My little one has been sick, had a fever, basically tons…

Girls, hello! My little one has been sick, had a fever, basically tonsillitis, his throat was red. He's got a temperature for two days now and it's not going up. His condition is good, but he's being fussy. He hasn't eaten anything for two days, and his sleep schedule is very strange. He's been sleeping twice a day now. He's started sleeping more than twice a day, he seems fine otherwise, just being fussy. Could this be due to teeth?