I got some vegetable seeds from Lidl just before lock down and have been growing them on my window sill but now they seem to have stopped growing and I don't know what to do next (there were no further instructions other than to put in the pots and soil it came with) I have a tomato plant, cucumber, paprika and courgette. I've googled but I'm a complete newbie and don't understand. Can anyone explain, in the simplest possible way, what I need to do next? Thank you *Edit I will post pictures when I'm home. Meant to take some before I left the house but forgot