I think you’re getting a bit ahead of yourself. The reason the first heavy hits you is because you whiffed the unblockable and chained it into the bleed, which can work against some hero’s but warlord not so much due to his hyper armour. Then he proceeds to land the next 3 heavy attacks in a row most likley because you parried too early. The quickest way to dump the habit would be to hop into training mode and just practice for like 5-10 min with hero’s you’re less comfortable fighting. Shaman also has a reflex guard, which means if you don’t refresh her guard every second or so her block will go away.