What about to give some milk with nuts and dry fruit stuff friends.I think this combination will be better than only dry fruit stuff ?
Please do not give that! Dairy, seeds, nuts and dried fruit are all big NO NOs!
The right diet is unlimited hay (up to 80% odf the dialy food intake), 1 cupful (ca. 50g) of mixed veg and a topped up bowl of pellets (but change the pellets regularly and adjust the amount once there is more of an intake).
It can take some time for piggies on different pellets to make the change; it also depends on how much veg you are giving. Most young piggies have not yet learned to use the water bottle. You can use a bowl with twice daily changed water underneath at first, if you wish to, but don't be surprised to find that it has been used as a loo! Continue to change the water bottle daily.
Weigh your boys once weekly to make sure that they are growing steadily; it is also a good way for spotting illnesses and problems early on.
After 6-9 months when the boys have reached most of their adult size and weight and the rate of growth is slowing down, you can start to slowly reduce the pellets to the the 1 - 1/2 handful they will need as mature adults from 12-15 months old onwards.
What veg piggies can eat, you can find in this thread:
http://www.theguineapigforum.co.uk/showthread.php?t=42
You have a very cute pair; they will hopefully settle in soon!