It looks like the plants are limp so this could be too much water as  root rot makes the plants wilt. It could also be wilting from not enough water. If you water once a week it could be not enough depending on the soil and weather conditions. It is best to poke your finger into the potting soil and water when the soil is dry deeper then one inch down below the surface. The good news is the plants are not dead and could perk up once they establish a new root system in the new soil you planted them in. Plants often look limp after transplanting and this is called transplant shock. Do not fertilize limp or wilting plants. Continue to give them good sunlight but no direct  sun and feel the soil before you water. I am going to assume that you know to water deeply and let the water run from the drainage holes and do not let the plant pot sit in standing drainage water. I think they will pull through. Keep growing, Marianne Binetti