I don't know much, so take this for whatever it's worth, and then listen to the more experienced people here.

I think you're using too strong, and too much fertilizer. Your orchids should be fed, but the formula is weakly, weekly. I only use about an eighth of a teaspoon, mixed in with a full pitcher of water.

And this may be a long shot, but I see bananas next to your orchid? Not sure if this is normal at your house, or just where you chose to take the photos, but I've been told to never keep fresh fruit near orchids, as the gasses the fruit emits can do severe damage to the 'chids.

Good luck with your growing. You're going to do just fine!!