Sabrina, you only saw the first leaf eleven days ago so it will be fine in the vermiculite for at least a month without fertilizer, then you can either start giving it some weak fertilizer or transplant it into potting soil (not soil from the garden, that doesn't work in pots). The vermiculite should not be very wet, it should be damp in the meantime.
Is there somewhere outside in the shade that you can put it during the day to get more light and then bring it in at night? How cold is it at night there - just wondering if it could actually stay out. If you're concerned about protection, have you thought of using a cold frame? I used to have one when I lived in the UK to give some plants a little more protection from the cold in winter (now living in Canada not sure I would really classify that as cold now
) and it would also protect it from birds and animals. That's assuming you're going to have other seedlings though because for a single pot a whole cold frame to itself would be overkill, you could use something smaller like a cloche at night if necessary.
I agree with CaliFlowers, I also don't use fertilizers with such a high middle number (although the all purpose Miracle Gro here no longer has that ratio, it's now 24-8-16). BTW, CaliFlowers, are you sure your seedlings that suffered from drought were actually dead? I had that happen to a whole flat that got put out of the way and forgotten for weeks and they were all brown and dead looking. On a whim I gave the tray some water when I found it and most of them were actually still alive but had just gone dormant from the drought.
