"Converting 1 LHB coach to hospitals will require minimum 2 months" - On what basis did you conclude this?
RCF alone manufactured around 60 LHB coaches per month consistently during 2019-20. And in the past, during wars, IR modified existing rakes into medical emergency coaches for the military within days, with the help of the military. They can do a conversion in a matter of days.
"Also where will u get LHB coaches for running passengers trains when train operation will start if u convert lhb coaches to hospitals? " - No...
more... one is asking them to convert all LHB rakes into hospitals. Just a handful of rakes that can be used in case of an emergency.