If blossoms are the problem, pick them off. Just be gentle. If it is the other end that needs attention, cut open the container and ease out the root mass. Soak the ball in a diluted fertilizer solution for a few minutes and then knead carefully. Transplant into a larger container and reuse the soaking solution by watering the plant with it.
Leggy plants are more troublesome.
However, plants that have growth crowns near the existing soil line cannot be set in any deeper because if the nub is covered with dirt the seedling will die. Sometimes the best you can do, besides feeding and lighting well, is to provide a support stake or a shelter from wind and make the hardening-off period more gradual. Then come back next week. Linden Staciokas has gardened in Alaska for more than two decades. Questions about gardening can be addressed to her at P.O. Box 72884, Fairbanks, AK 99707.