Putting ties on my baby's bed cover

My baby is already big and is growing smarter each day. He knows how to pull his bed cover. Instead of sleeping/napping, he always enjoys playing with it. So I need to make a solution on how to stop this attitude of him.

I get the sewing machine. Cut pieces of cloth. Sewed a tie and attached it to his bed cover. My husband said, it won’t work and I would just ruined the bed cover. But he is wrong. Right now, the ties I attached to the bed covers is working good and even the best :D .

The first time I tied the cover, my baby was crying and he’s very angry because he can’t play anymore :D .

And also, I put the bed sheet under the bed cover so that my baby will not be suffocated. I didn’t use a crib bumper also so that he can breath freely. I can see, it’s safer for my baby if I will make it this way :D .