Well, I guess I gotta ask, why try then? Is having additional relationships important right now? It would be one thing if you'd already fallen for someone and were trying to make it work, but if your life is already full, why seek to add to it? You can be poly in spirit -- not restricting of each other's ability to love others -- without seeking to do anything about it in practice.
Also, I just noticed that this thread is tagged "working mother" but not "working father", just sayin'.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.