Hello!

I seeded five Adenium Arabicum in a 6 cm pot closed in a plastic bag.. 3 plants have sprung up. A seed has molded and another has not germinated.
When it started to grow 4 true leaves, I moved the plants into separate pots. I closed the pots in plastic bags with the thought of gradually opening them to habituate the plants with the environment. After about two hours in the sun, I found that the leaves of 2 of them were burned ... to a greater or lesser extent. I immediately removed the pots from the bags. Then I found on the stems some traces that now seem like wounds... Here's how it looks after about 6 days.
...strange that one plant does not seem affected though it was exactly the same conditions as the other two.

1.

Any idea? Could I do something to save them?