Zelcore allows using 2FA on its wallet, it's just that this wallet is complicated to use for a newbie but pretty secured, I use this wallet to store my Flux coins.
Do you mean the same Zelcore
[1] wallet that runs on Solana blockchain? You are making things complicated for your self except if you want to use a multi bridge to switch between chains which is off point to what Op is searching for.
The best OP can use is to use a 2-3 multisignature wallet as advised above, you can still spend from your wallet with the right seed phrase and disable the option when you reinstall the wallet(Electrum) if anything happens in the future but I didn't see anything like that on Zelcore, not safe my friend.
[1]
https://solana.com/ecosystem/zelcore