Hi everyone
Does the size of the plant aeffect the length of time that it will take for the plant to be finished flowering. Also is it normal that all leaves turn yellow?

its not normal for all the leaves to turn yellow just some that dont get light and shit i wouldn't worry if you have a few but if you see more yellow than green id be worried

Regarding the size of plant and the flowering time, it doesn't take any longer to flower (Example Blueberry 8-10 weeks), but some bud sites will generally finish before others unless you have perfect lighting everywhere. Some people chop the top cola first, then let the rest finish budding. Others harvest the plant all at once and get big buds and small buds all at once. Hope that helps. Peace.