I agree with those who have said that you are just lonely and imprinting your desires for a friend on Wrinkle. Do NOT feel like you have to get rid of him; I know how soothing familiar objects are to those who are autistic and putting Wrinkle in the trash would be traumatizing, most likely. Just remember:
1.) Wrinkle cannot truly help you with anything but a feeling of comfort. Never ask Wrinkle for help or advice. You can talk to Wrinkle if it makes you feel better, but know that he does not answer back. He is a toy, and this is not Toy Story.
2.) Only Allah is going to provide you with REAL comfort, healing, and aid. Turn to Him in all things, not your toy dog. If you feel more comfortable holding Wrinkle on your lap while making dua, or reading Qur'an, that is perfectly fine. Children pray with their toys all the time. But make sure your thoughts are on Allah, and know that Wrinkle does not have to be there to make for a better dua or that he is the listener of your dua.
I have a plush of Shining Armor from My Little Pony that is my comfort. He stays on my bed when I pray and make dua, but I hold him when I sleep and cuddle him when I cry, and I often hold him when I listen to or read Qur'an. I'm 43 and I suffer from mental illness as well. I know he cannot help me with anything, but he does make me feel better just by being there.