These past few days after been full of an irritable, sleepy and non eating baby. He usually eats 4-5 bottles a day (28-32oz) plus his meals (2-3). We switched to a lower iron formula because basically my mother in law picked some up and we figured we’d use it up considering he’s eating solids it wasn’t a big deal. Switch was about 1.5-2 weeks ago. Wednesday and Thursday he had a fever of 100, figured it was teething, flushed cheeks and chewing everything plus I can almost a new tooth cutting. Friday he had no fever. Since Wednesday I’ve had a very hard time feeding him, he barely wants the bottle and if he does take it it’s 2oz maybe 4oz here and there, plus he’s been VERY hard to get down for naps and even after he naps his eyes are heavy and full. He slept a 12 hour stretch the other night and woke up with glossy tired eyes. He’s way more whiny than usual. I’m worried it’s his iron dropping too low, I googled some signs of low iron and most fit him right now. But some also over lap into signs of teething.