Greetings gani!

Honestly it doesn't even matter which coaching institute you are studying from, main thing is how you are preparing and how much punctual you are. However akash definitely have a more name than deeksha institute. I'll suggest you to contact students who are already studying there and ask of reviews. Also it doesn't really matter from which institute you are preparing as long as you are punctual in your preparations !

Here's an article to help you further https://engineering.careers360.com/articles/how-prepare-for-jee-main

Hope it helps!