Community / Vragen

Basilicum- Yellow Leaves, Brown Spots?

The leaves of my basilicum plants on the vensterbank are turning yellow with some brown spots. Too much water? Too much sun? Not enough? I wonder if they’re getting enough nutrition in their pots. These also don’t seem to be growing much in the last week or two (since I trimmed their tops..) In a day or two I am supposed to start the afhardening process. Should I just proceed and hope they perk up outside?