Need Advice on DILR

I have been practicing LRDI consistently since February. I am able to solve most of the sets but I take too much time on 20- 25 minutes on an average and some times even 45 min to 1 hr especially in DI. In DI, I still struggle to decode some sets and get stuck.

For those who improved in LRDI-

1. How did you reduce your solving time?

2)How do you approach DI complex set?

3)What is ideal time of solving a set?

Would love to hear your strategy and suggestions.