>>958343They are going to get leggy.
You will need to make a foil covered cardboard panel to reflect light onto them. Crumple the foil before attaching it to the cardboard to ensure the light is diffused. Use wood glue or Elmer's glue; 1 part glue mixed with 1 part water. Or just use tape.
That is the best you'll be able to do for them without adding light. You can still add light, ANY light placed 2 inches from the leaves will help a lot.
One of my windows has 4 hours of direct sunlight and the foil method is what I did. Only I did it on everything and made a shelf unit dedicated to starts. It almost totally blocked the window as you can see. They still got leggy.