As in thread title; if you are mining for a pool that doesn’t signal Segwit, you should consider moving to another pool.
It is to ensure that we have enough signalling (75% blocks) in the next period, which begins tomorrow.
Here you can find a list of pools that are signalling:
https://www.litecoinpool.org/pools
Pools that are NOT signalling now:
LTC1BTC
Antpool
LTC.top
P2Pool
ViaLTC
NiceHash
Thanks for your help if you decide to move from these.