They came out so nice from the seed and now a few died. I have them inside.
This may be a case of dampening off.
Here are some articles that will help you.
https://www.gardeningknowhow.com/garden-how-to/seeds/what-is-damping-off.htm
https://www.gardeningknowhow.com/garden-how-to/seeds/seed-germination-terms.htm
https://www.gardeningknowhow.com/garden-how-to/seeds/seed-coat-stuck.htm
https://www.gardeningknowhow.com/garden-how-to/seeds/fungus-control-in-seed-trays.htm
If you trim back the plant as it begins to spread out, will this harm the plant and prevent production or will it help contain it but continue to produce?
No pruning or cutting off the leaves is not recommended.
Here is a link with more information.
https://www.gardeningknowhow.com/edible/vegetables/squash/should-you-remove-squash-leaves.htm
Having grown squash from seed in a propagator and repotted into 4 inch pots, they have started to wilt very badly. What can I do?
Squash seeds should be started in 3" sized peat pots.
They will not do well if their roots are disturbed.
Here is an article that will help you.
https://www.gardeningknowhow.com/edible/vegetables/squash/tips-for-growing-squash.htm
Can you grow squash in a rock garden?
Though it would not be an ideal planting location, one of the joy's of gardening is that you can also try something and you just never know!
Here are some links with growing and care information.
https://www.gardeningknowhow.com/edible/vegetables/squash/tips-for-growing-squash.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/growing-squash-in-containers.htm
How much sun do zucchini and squash need to grow?
Your Zucchini and Squash need full sun to grow and develop fruit.
At least 6 hours of sunlight and they can even use 8 to 10 hours of sunlight.
I understand it could be due to a virus. Can you eat it? I tried uploading a photo but I guess I don't know how.
Here is a link with information to help you.
https://www.gardeningknowhow.com/edible/vegetables/squash/yellow-bumpy-squash.htm
Plants look healthy and are being pollinated, but no squash!
Sometimes squash gets going a bit slow and it will seem like you have tons of blooms but no squash forming. One year I went for weeks on end with no signs of squash, and then finally toward the middle of the growing season, squash showed up almost overnight and I had a great harvest.
Check on the ground underneath your plant, make sure the fruit aren't falling off before they get a chance to ripen.
If you don't see any fruit (or large amounts of blooms) on the ground, double-check your light and water situation. Squash need full sun and plenty of moisture to thrive. And you will need patience as you wait for your fruit to appear!
These articles may help you:
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-fruit-falling-off-the-plant.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/squash-blossoms-falling-off-vine.htm