There can be a few reasons that the laying is not in full swing. The stress from relocation is a big factor. It will soon go away. Another factor is that they may have gone thru molt and have not totally recovered from it. Maybe they are already spent and the previous owner not aware of it. Sexlinks do produce very well for about 4 years or so, and then they burn out. GIVE THEM A CHANCE to normalize and then see. Other chicken breeds produce for longer periods of years, but the production does drop with age. Sexlinks are kind of SUPERCHARGED egg machines. I have one about 1 year old and she is currently laying daily almost a JUMBO egg. My RIR is about 3 and currently laying about every 2nd day, a LARGE egg.
WISHING YOU BEST and