Is that your new place? How nice! How big is your coop? Is there enough room to add a second ramp and access door? I'm not sure it solves the problem, just wondering about it as an option. One thing you can try is offering treats in both hands to get them eating near one another, to hasten the adjustment, and remember this is all part of establishing pecking order. You might make a point of putting the younger girls in the coop before the older ones go in on their own, and make sure there is lots of roost space. If you do this nightly, I would expect that eventually they will do it on their own, the trick will be watching the normal time the older girls go in so you can beat them by a minute or so each night until the little girls learn to do it themselves. I have a similar situation where I have two older girls and five younger girls, but they still have separate coops, and this weekend they are moving into the larger new coop all together. Should be interesting. The younger girls are extremely deferential to the older girls, which the older girls seem to think is funny, and sometimes they'll just look or take a step in their direction and make them scatter. There are decreasing incidents of squawking and a feather pulled here and there, and never any blood drawn, so even though I want them all to get along better, they're doing okay. The little girls are very close in size to the older girls now, just at POL, and that seems to have helped.