Maybe this is part of why Lukashenko is somewhat reticent to join the fray. And, of course, this could simply be propaganda.
The Belarussian people don’t want to be involved in this war. We have quite a few Belarussians in Poland - yes nearly all of them ran from the country as they can’t stand their dictator Lukashenko.
all of them oppose the war.
The military in Belarus is also incredibly weak - Lukashenko did that to prevent any coups. He has a group of bully militia’s to prevent coups, but the military itself is basically a weakly armed battalion.
Even if they WANTED to, they couldn’t invade Ukraine.
PREDICTION: After letting Russia bring troops in to attack Ukraine, they’ll cry for help when Putin declares Belarus part of Russia. Hell, the troops are already there - now’s the time! And then the USA will send Belarus $100 billion (which gets split between the deepstate and Putin).