Dora: that's a lovely Picotee. 3 years is not out of line for reblooming after the 1st winter's bloom. Since you live in zone 3a I assume that your bulbs are in pots year round. Your bulbs would certainly benefit from getting fresh soil in the spring to jump start spring growth. Old bulbs also tend to heave out of the pot, so repotting them gets them back to the proper depth. Don't be a rush to split off the baby, wait till it has a couple of roots.