My husband and I are new parents of two beautiful Pomeranian puppy brothers, now 3 months old. We have heard conflicting advice about whether to keep them apart for about a year or allow them to be together. They have separate crates but seem to want to play together a lot. We want them to get their play time but worry that they may not bond with us (and only with each other) as a result. Does anyone have any firsthand experience and advice?