Lonsurf (trifluridine/tipiracil) effectiveness

I have searched and read through the available threads on here but there doesn't seem to be a lot of information and consensus on Lonsurf. My research shows that it is the last resort in treating stage 4 MCRC. I have also read the effectiveness might give us 2 months of stability but not really any reduction in tumors. It really is just to give you some more time before the inevitable. Anyone have any experience with it or know anyone that has seen any positive results. Obviously concerned about side effects as it seems they save the drugs with the worst ones for last which makes sense. Talk to doctor on Wednesday but definitely scared based on where we are. I am waiting for the dreaded "T" word to drop.