How to best decrease the rating of a new account for a beginner in chess?

I'm teaching a beginner in chess who wants to start playing on lichess. Current strength is certainly below 800.
What's the best way to lower the provisional rank of the new account from 1500 to say 700?
I want to spare that new player the frustration of playing for real, trying hard and just getting destroyed several times in a row. (Otherwise, I'm sure this would do significant damage to that players motivation to learn the game at all.)

Start games and resign right away?
Is there a better way?

Thanks for any insights you might share!

Tell him that you want to play a few matches with him in order to recheck his strength, skills, areas needing the most concern (like a non-competitive test).

The kid just has to play rated games at the best of their possibilities against similar opponents until their rating stabilizes.
If they resign early or play with the intent of losing that will be considered sandbagging and the account will be marked accordingly.

@Deadban so you are basically saying there is no legitimate way to spare new users from this frustration on lichess.
Pretty frustrating on its own I have to say.
(That beginner is not a kid by the way.)

@AmolGreat I would probably need to play (and win) with my account an infinite amount of rated games to get that new account down to 700. Not a nice experience for both of us.
Don't think this is the way to go either.

@FritzSch if your student didn't start a game yet: Handpick a game in the lobby against a 1000 or similar. Set the rating range to "800-1000" and then pick games until someone wants to play him as a 1500?. If they lose, they'll drop into that range with one game already.

If masters can do a speedrun against bad opponents, then why not a beginner can lose to hordes of advanced players?

@FritzSch said in #4:

@AmolGreat I would probably need to play (and win) with my account an infinite amount of rated games to get that new account down to 700. Not a nice experience for both of us.

Thanks to the Glicko-2 rating sytem, that would not be more than four or five games, I think.

@FritzSch said in #4:

@Deadban so you are basically saying there is no legitimate way to spare new users from this frustration on lichess.
Pretty frustrating on its own I have to say.

The whole point of the rating system (Lichess one is the most precise one) is to pair players of a similar skill. The system can't learn your strength if you don't play a certain number of rated gamed first.
On chesscom you can set your desired rating when you make the account. That feature is however exploited and abused by players for malicious and illegal purposes, such as sandbagging. Lichess chose not to risk it.

(That beginner is not a kid by the way.)

That must have been a lapsus. I thought I had read "kid" somewhere in your post, my apologies.

Basic principle is when you first start something, not being the best at it is natural. A basic principle, that applies to everyone.
Simply accept the neutral objective principle, don't try to fight it. Play some, lose naturally, rating gets adjusted.
The work has just begun.

@Cedur216 said in #5:

@FritzSch if your student didn't start a game yet: Handpick a game in the lobby against a 1000 or similar. Set the rating range to "800-1000" and then pick games until someone wants to play him as a 1500?. If they lose, they'll drop into that range with one game already.
You can also nominate opponents at your current max, to 500 below. Losing to lower rated players, gets you to the right level quicker.

Losses teach you more about your play than wins, so although demotivating, starting with a healthy pool of losses, would serve as a good base for improvement.