Looking for advice in advanced preparation for a possible 2nd litter after my pair of sisters decided to surprise me with a litter of 4 12 days ago. I separated the parents as soon as I could after the surprise but I suspect Mildred has another litter on the way cos she's fattening back up at a surprising rate for a nursing mum (I'm no expert but I would imagine she'd stay pretty slim whilst meeting the demands of a litter?) anyway, currently mum and babies are in a two tier cage with a barrier round the ramp to prevent babies falling but still allowing Mildred the freedom of the whole cage and adjoining run. If/when another litter arrive I assume Mildred will need space to attend the new arrivals but the older ones will be very young to leave her. Is putting the 4 week old babies in the bottom tier and having a barrier at the bottom of the ramp to prevent them going up but so Mildred can still come down an option? I'm just thinking that gives Mildred space to tend to new babies but allowing older babies to remain with access to mum for a while longer. Anyone offer words of wisdom?