The only possible way I can think of is if you can contact the admins on Reddit and prove you are the owner of the account, then they might be able to reset the pw and send it to you.
However, I would not hold out much hope for this, getting this wrong would be very bad, possibly opening Reddit up for legal action, getting it right won’t really matter to them, so they probably have rules about denying these kinds of requests.
Not sure what are reddit friends for anyway. And in general the point of a new account is to see fresh communities/person. I don’t think you can import reddit to lemmy anyway