8 month schedule /ftm help!!

Guys my son has been so good with napping twice (sometime three times a day) but lately it's been so off. Are they supposed to drop a nap at this stage. He is also not taking his afternoon bottle anymore. Could this be teething?? I'm so confused guys help me figure out his schedule. How long should the wake windows be?

Also he was taking 7 5-OUNCES bottles total (he would only drink maybe 4 ounces though)including night feedings.

Now he's taking 5 bottles

I feel so down man, I had a system and now it feels like everything is out of my hands again