I have squash planted in a self-watering container. It came up and grew to about 6 inches then just quit. Is it to wet?? What could be wrong??
How big is your container? What type of soil is in it? How much sunlight does the container get?
That is the natural progression, nothing is wrong. The plants grow 3 - 4 true leaves then "rest" for about 10 days, during that time very little top growth occurs while the root system is growing rapidly. After this time growth resumes and the plant starts vining. Be patient.