Life Regen / Enduring cry question

Hi everyone,
I recently tested the buff for "Life regen" of "enduring cry".
It is written "Base duration if 0.75 seconds"

Enduring cry at level 18 does 356 life regen per second, so as the buff last 0,75 sec it will regen a total of 267 life "during 0.75 sec".
Is it increasable ? (Increase duration Gem maybe ?)

Are there other ways to increase the enduring cry duration ?

I have 3 free sockets on my gloves, and I'd like to comfortably facetank izaro.

Only have 5k2 life at the moment..

Thanks for the answers

My current stats are (with buffs and one totem) :
5k1 life (quite low, budget build)
90% physical damage reduction
45 life per hit (cleave makes it 90)
6.19 hits per sec
420.6 life regen/sec
block : 23%
evade : 5%

yes you can make life regen duration last longer iwth increase duration support if you are a berseker and allocated warbringer then you can make it last even longer and get mor ehp regen