Mediation/counselling and next steps

Hi,
BG: spouse is asking 50L perm alim. + interim + monthly 25K + lit chrgs, on grounds of so called mental cruelty and one incident of so called physical(no bruise/injury.../nothing)

Kindly help with following aspects:

1. How many sittings will mediation happen? - i know it is max 60 days.
2. I think mediator will ask whats the thing...spouse will say cant continue for xyz reasons...
3. What happens if i say i want to continue and spouse says no continuation - then obvly discussions will go into petition matters, so how it will be handled? - will mediation stop if one side wants to stop?
4. What must be my stand - i dont mind continuing because i know my spouse is acting out of rage with multiple things in the head(including selfish needs)
5. If mediation fails, can i request about 2 months to file my reply on petition? or is it immediate reply submit to court? - most importantly am looking for this aspect.

Thanks.