Triplex with single meters looking to split or submeter

[Keoni Sanchez]

First time investor closing on a triplex in Allegheny County. Two of the units share the same meter for gas, electric, and water and the previous owner paid all utilities. My return numbers are still positive while paying for these utilities, but they look much better once I can split some or all of them and have the tenant pay for their portions. 

I am looking for some general advice on what my best course of action here would be. From what I have read submetering seems like my best bet, but I have no experience with that. Open to all recommendations, referrals, or cost estimates that I can factor into my estimates. Thank you in advance