Hi, I need help with my plants. Their new growth i...

Hi there! Your soil looks very dry, first of all I need to ask : how often do you water your babies and how long do you let them dry? If you're really experiencing a 29°C temperature, you must water at least every 2 days, otherwise you'll risk an under-watering scenario. About the slow growth, that was to be expected, since caterpillars and miners did seriously hurt your leaves. As an emergency move, I would raise the pots upper so they're not touching directly the ground, spray the leaves with a dedicated product (such as "Caterpillar BT Spray" or "Spinosad") then setup a DIY greenhouse onto each pot to protect the plants from outside attacks and see what happens next. You will certainly need to repeat the spray operation. I'll be around, keep us up-to-date and good luck with these outdoor beauties!