Are they in two seperate tubs? 6 days is not very long for them to have settled in, especially since they are small babies. Normally you should let them settle without handling for a week before you start trying to feed them.

Give them lots of hide spots and perhaps block the light on at least two sides to make them feel enclosed and safe. They look a bit skinny and 50 grams is small. Live rat pinks or live mouse hoppers might entice them to eat. With F/T prey make certain it's really warm so it shows up as a good heat signature to them.

Good luck.