Not at all. I am in final year of engineering and I can assure you that it is far more easy compared to 11th and 12th.
Physics and chemistry are there but more or less , they are same as it was in 11th and 12( though topics to be studied are less) .
Since you have not mentioned the branch you are going to take hence i can’t comment on that. But as i am from mechanical branch , I can say about that.
Most of the people consider Mechanical to be the toughest branch academically but believe me when I studied that , I found it compatively easy then 11th and 12th. The reason was that I never bothered to mug up things as I did in school( otherwise it would have been hell lot of tough). In theory papers , You just need to go through the topics and understand the concepts behind that and once you get comfortable with the topic then it will be like a essay writting in exams as no one looks for bookish answers in engineering( as we were told to write in school).Now coming to numerical papers , even here you will just need to understand the concepts and remember few formulas and you can score quite well in that. I would admit that there are few papers which are really tough but you will need smart work along with hard work in these papers. I have a friend who sees the pattern of the solution of these papers and in exam still scores very good marks and this is just one way , you can find a way which would suit you.