Help pregnant platies!

[Cammywammy]

I have 3 pregnant platies that are each square off and the makes are chasing them I'm sure they will give birth in 24 hours I only have one breeding trap with a V what do I do! I want to keep as many fry as possible for my science teachers tank!

 

[Cammywammy]

There was a white stringy thing coming out of the biggest platies coming out of her birth canal and now she is dolphin diving help!