Well i cant remeber if its lr or lr2 thats auto meaning you can leave em under 24 hrs of light, but theyre going to flower no matter what when they decide to. Its why you cant make mums or good clones

I would def. recommend getting a bigger pot, are roots growing out the holes in the bottom of those? If they are id def put that sucker in another place. But if you think you only have 2-3 weeks left you might want to jst let it go. The latest Ive ever repotted was less than half way into flowering (maybe like 3 weeks? or coulda been just 2) when they still had a ways to go.