Login engagement Interaction - Students intern app

So the micro interaction is a term which is being used for its trendy ness and not for its purpose . This micro animation is something which i used to ver come one of the problems in my application the users were facing .

Problem :Ours is a sass application and its data heavy , it takes at-least 2 minutes to login, how can i engage the users for 2 minutes without having them distracted to any other work. One such example is here