Help- 19 day old rabbits not eating mums cecotropes (poo)

Hi, Im Becky. My 19 day old rabbits are separated from mum for know as she rejected and tried to attack them. I am feeding them from mum and did put some of mums cecotropes poo in with them but they didn't eat it. I read that I have to use a probiotic like bene bac gel or acidophilus capsules for three to five says after the babies have openened their eyes before I can put hay and pellets in their cage/box. Others products mentioned were probiocin, fibrepkex, and avipro. Anyone know about this? Then what type of hay and pellets? Can I put water in tge cage for them to drink?

Any advise at all about baby bunnies would be great :)

Regards

Becky