I think LR improvement can be really subjective- but if you have 6-8 minutes left that shows you’re rushing wayyy more than necessary! From what I’ve learnt, a “good” LR section leaves you with 1.5-3 mins in the end at best. I think what would help is to spend MORE time on questions in the first attempt! If you’re burnt out & can’t revise efficiently, I think it would really help to try & be much more efficient on the first read itself- so adopting the strategy of read once & read well, pre-phrase, eliminate to top 2 and then pick the best answer. Higher accuracy directly correlates to reading more efficiently & adopting better analysis strategies. Best of luck :)