So I made a throwaway litecoin core wallet to temporarily hold .75 LTC before I swapped it and apparently I must have made a typo for my passphrase and it won’t let me send LTC without it.
My passphrase I used was only 11 or 12 characters, what route should I try to take to correct this?
Your only hope is if you know what characters you used and try every combination, inserting any possible mistypes that might have been made. For less than 1 LTC just consider it paying the stupid tax.
But, I think you can just reinstall the wallet from scratch if you know your seed words. Then it will be fine and you can access the funds.