Tip 1 : Practice DP based questions as much as you can. Also, be confident during the interview about your solution. For practice, you can prefer Coding Ninjas and Geeks For Geeks.
Tip 2 : They do not judge you upon the number of internships you have done or the number of projects you have made. A single ,good-quality project is sufficient, provided you have in-depth knowledge about it. What matters to them is how efficient learner you are, how good is your problem-solving skill and also how confident you are with your answers.
Tip 3 : Practice topic -wise questions, participate in lots of coding contests, watch lots of Youtube solutions even after you could solve a question, because you may find a different approach that is efficient than yours and watching video solutions is always a better option than just reading the solution , as it gives a clear and deeper understanding of the logic's . Also pray hard along with your preparation.