Hyperledger Fabric 1 4 Private data collection

Question

Hyperledger fabric provides inbuilt support storing offchain data with the help of private collections. For this we need to specify the collection config which contains various collection names along with the participants that have access to data present in those collections. There is a setting called "BlockToLive" using which we can specify for how many blocks the peers should store the private data they have access to. The peers will automatically purge the private data after the ledger block height reaches the mentioned threshold.

We have a requirement in which we need to use the private data collections but the data should be removed (automatically/manually) after exactly 30 days. Is there any possibility to achieve the same?