You can tie them to sticks to open them up a little if you want wont hurt and will get light to the lower secions or buy a cheap t5 or two off craigslist and just lay them on thier sides at the bottom of the plant I do both. The plant will know if there is a fan leaf in the way of the buds at the bottom and it will kill it off so also watch for leaves turning yellow above buds and cut them off when this happens. Cut at the leaf not the stalk let the stem dry up and fall off on its own.