Hey there

It is very sad to say you that you will not qualify for iits. As the cutoff subject wise is 12. You have scored very good as with 150 marks your rank as per previous year analysis will be around 6000 and with this rank you could have got good iits. But do wait for the results then decide.

Check JEE advanced cutoff

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/articles/jee-advanced-cutoff/amp&ved=2ahUKEwiA09Hkvc3iAhWz63MBHTNbBgwQFjAKegQIARAB&usg=AOvVaw2VOKI-nLKDIek2nav5VUOi&ampcf=1

Good luck