Horse not eating then being taken away

I've just had a foal which constantly had to be told to eat and wouldn't go to his mother to be fed. In the socialising category for mothers I'd like to see an option to "Encourage to feed foal", I tried to just get her to socialise hoping she'd feed him but she didn't. They're all Friendly horses too. He was becoming Dazed (I assume with hunger) even when trained to eat hay and he seemed to reach that point about 3 times a day. I had my Sim sleeping next to the stables to keep feeding him. He's gone to his mother once in about 6 hours (real time) and that was only after he was already on solid food. I've switched households as my Sim was just constantly complaining and the other animals were unhappy at a lack of attention. So I maxed their needs and moved on. I was concerned if it continued they'd be taken away.

It's odd though as my adopted foal in a previous household went to an unrelated mare to be fed and was absolutely fine.

@ChaosTheories I've found that my horses get stuck sleeping too if I use CAS, Build Mode or travel while a horse is asleep. When I return to the lot/live mode the horse is stuck until needs deplete completely. I can't wake them up so I get my Sim to travel to a different lot with the sleeping horse, I take them to Duke's Hall Park because it has feeders and fun activities to quickly fill their needs again.

I figured this out after standing at the feeders yelling for them as they starved in their sleep.

So I avoid going into any other modes to avoid it happening again.