Send your coins from your Electrum wallet to an address in your Ledger. "Syncing your wallets" is impossible, ill advised, and insecure.
Also, the Ledger asked me if I wanted to use Segwit or not. I selected "I don't know". What do? I think that's a "yes", right?
You should use segwit so long as it gives you addresses beginning with a '3'. If it begins with 'bc1', then don't use segwit yet (the 'bc1' addresses are not supported by most wallet software yet).
You can also use Electrum as the software side instead of Ledger's Chrome app.