I Am Geeth And My Baby Boy Is Now 5.5

I am geeth and my baby boy is now 5.5 month old. He is exclusively breast feeded till his 5 month then we are giving slightly other foods because he is not ready to take nanpro1 and my maternity leave wil get over my next week. Now he is having problems on his stool now is not having regular motion kindly suggest other formula milk with differnt taste and solution for motion problem