Heat damage, nutrient deficiency or something else?

[Waterdog111]

Not sure how much I can help but I’ll try. Leaves look a tiny bit dehydrated not much, probably just using reserves to grow roots. You didnt say what type they are but look like Phals. After two years they should be accustomed to the SH. Phals normally arent needy of too much light. Hows your inside temps as compared to outside, I think maybe window temp maybe culpret.
Good luck.