I have been able to solve some good DILR sets but usually take around 20-25 mins. Is it okay to solve good sets without time constraints at this stage i.e. just 45 days to D-Day.........

a good dilr set can will fetch u 6 questions and in the remaining 15 mins u can solve a set of 4 questions of moderate level thereby fetching you 30 marks. which in my opinion is really good in dilr section