Q.Lemon tree top heavy
I have a 1 1/2 year old lemon tree that I grew from seed. I recently replanted into a 16 in pot and it exploded with new growth. Now all of the branches seem to be sagging. Should I prune, which I don’t want to do if not necessary, but also don’t want to damage the plant through inaction?!

If the shape of your plant doesn't feel right to you, you should probably go ahead and prune. 99 times out of 100, plants are only improved by pruning. Go slowly, you can always cut more tomorrow, but it takes a long time to regrow if you cut too much. This article on lime pruning applies as well to your lemon: https://www.gardeningknowhow.com/edible/fruits/lime/tips-for-pruning-lime-tree.htm