Is there any way to import a BIP39 seed to bitcoin core?
You can't directly import BIP39 seeds because support for that hasn't been implemented, however you can import it into another wallet, have it generate a bunch of addresses, export the private keys of them all and then import them into Bitcoin Core.
For example, using Electrum, after you import your BIP39 seed you'd go to Wallet > Private Keys > Export and then type a name for the file which it will dump all the private keys in, one key per line.
Then you make a new Bitcoin Core wallet and in its console you would type "importprivkey <private-key>" for each private key.