Why do you use multiple wallet, did you cheat at bounty or airdrop project, you can use your one wallet for transferring your bitcoin to other exchange account with less fee, never use multi account for joining at bounty or airdrop project because is not good ideas.

Would you tell us if this multiple wallet address belongs to the same public key or the same recovery seed?
If yes, I guess that's okay to do that (but not recommended), since it will only spend a single fee but on the other hand it will cause you higher fee due to lots of inputs (you will see a warning message for sending to your own address on some wallets).

But if not, that's alright but same thing, fee will eat up large fraction of your funds doing that.

This is funny, why do you want to keep doing that? Will this not amount to wastage of your funds since they still belong to you, or just an effort from you without any value been added!