Help! I’m I doing thing good?

The pots are tiny, you should aim for 15-20L unless growing really tiny plants, so yes, definitely repot. If you have compost based growing medium then you do not need to feed them for a while (read what your compost bag says). If it is very nutrient rich, then you may have enough nutrients to go without extra ones for a month or even longer. The leaves look healthy so your lights are fine, they are not burning them. Most plants usually take a pause in week 3 before full veg phase starts and they begin to grow like mad so be patient. Good luck!