Hi and welcome to the fourm.
I'm sorry but I have to say I am the worse speller you could ever meet.
So forgive me. LOL
I have had the same problem with my Milo. My qp. At the same age as your baby.
Also no vet near us. I had to take him out of town three hours away. This was a big deal for me because I get lost in my own back yard. LOL
I was taken him and my other bird to the vet for a yearly check up. I had NO idea anything was wrong. Milo had a very bad cut under his wing.

I had NO idea it was there. Same as you He acted just fine. Nothing had changed really.
He was eating seed as his main food. When I got him that's what he was on.
I tryed to change him to pellets but he wouldn't eat pellets. He would go without food first.
I did like you and changed his toys around. Once a week. I don't think anyone could love a bird as much as Milo is loved. That is untill I found the forum LOL. So he had lots of play time with me. Lots of love. Lots of toys. Clean cage. I found this forum early on so I learned alot about what NOT to do. Milo was my first Bird. I had no idea what it took to have him in my life . You know like no candles no spraying stuff. Like cleaners and smell good things. Had to change my cookware. We smoke so we had to change how we went about that. Go outside, wash hands before picking up Milo. So on and So on.......
Anyway back to the vet visit.
The vet did blood test and found nothing wrong. I'm glad I had the test run because it could have easly been the trouble.
I had to leave Milo for a week to try and get his wing healed up. The vet got him to eat pellets so That was great. When he got home he took the rest of his feathers off!!!
We have been on a long road to recovery. Milo still has a cut under his wing that I can't get healed up.

I got pluck no more from king cages and was told it could take up to three months to work and it did. He has most of his feather back. I got Milo and nibbles a avian sun light. Also a humitifier.
He took baths twice a week on his own but The vet said I should start wetting him down every day and stop the baths. This would promote him to groom instead of plucking. I changed them from a water dish to a water bottle. Vet said That could also be a problem. Unless I change his water five times a day. Milo didn't soak his food but still a fungus could be growing in the water.
Vet said that plucking could become a habbit and I should do everything I could to provent that from happening. As it could get worse as time go's on. I got things for him to forage for his food. I put things in his cage that he could shred. I have to NOT react to him when I see him working on his feather as thay love to get you going and it makes them do it more. Hard!!!!!
It really is a good idea to get him to a vet ASAP. I tryed the birdie jacket and just like your baby is most likely to do he had a fit. I was willing to put up with the bites but he got the thing off in maybe two mins.!!!! Little devil. LOL There are other things to try but I would have a vet try them.
Good luck and if I can offer any support durning your time of need please let me know.
Is this your first bird? What is your babies name? Do you have other birds?
Are there other pets? Kids?
Lisa and Milo