Mangraz

It could be that the plants did not get enough water when you were gone. Especially when the soil was extremely dry when you arrived back. Hopefully the yellow leaves will turn back to normal soon!

@Patricia_Zamnesia, I think so too. Got a good loupe from a friend now, and while the trichomes seem close to perfect, I don't think there would be this many yellow leaves under normal circumstances. The yellow leaves have mostly fallen off now, but I think that's fine, the buds will surely enjoy the fresh air.