I’m suspecting that Lukashenka, while a very provincial fella, is more acting the idiot than is an idiot. I believe he knows Russia/Putin have messed up by starting this war and he is doing everything he can to stay out of it, while also paying lip service to Russia who helped him stay in power.
He also knows there’s huge public discontent against him and his position is only retained through brute force. If he puts his pampered and corrupt military in harms way they could turn on him. And then he’s toast.
So I expect he’ll continue to use all his tricks to try and keep Belarus out of it. There’s no way he’s attacking anyone.