Don't worry about the size of the pot or how much water. Plants are designed to live in vast fields and cope with rain.
To me it looks like the first "true" single bladed leaves have been burnt. I can see new leaves emerging from the centre. Once they grow, your plant should continue growing. It has just had a setback by losing those first 2 leaves. Try filling your pots up to the top next time, this will provide more room for the roots to develop.
Hope this helps..... Organoman. Viel gluck! (I have no idea where to find an umlaut!)