Shrinking Bracelet /u/YanTlr DnD: Roll for Initiative!

I made this item for my campaign and I would like to get opinions if it is balanced or not.

Shrinking Bracelet (requires attunement) This bracelet allows you to use your reaction to shrink to half of your normal size with everything you’re wearing and holding, if you shrink upon receiving and attack, you may impose disadvantage on that attack, while shrunken you have +1 AC but your damage is reduced by 1 category, (d8 tô d6 for example), the shrinking lasts for one hour or until you use your reaction to grow to your normal size again, if you use your mellee attack and use this ability you get advantage on the attack.

I made this item for my campaign and I would like to get opinions if it is balanced or not.

Shrinking Bracelet (requires attunement) This bracelet allows you to use your reaction to shrink to half of your normal size with everything you’re wearing and holding, if you shrink upon receiving and attack, you may impose disadvantage on that attack, while shrunken you have +1 AC but your damage is reduced by 1 category, (d8 tô d6 for example), the shrinking lasts for one hour or until you use your reaction to grow to your normal size again, if you use your mellee attack and use this ability you get advantage on the attack.