How can you be "current" on your private pilot certificate, but not your commercial? You only have one pilot certificate.
Do you mean that you are current in single engine airplanes, but not multi engine airplanes?
Maintaining multi engine currency at this point is, well, pointless. Nobody is going to hire you into a multi engine airplane, unless you're going for a second in command position at somewhere like Great Lakes. If that's your target, then you would want to do some research, find a way to get current, and apply.
Otherwise, get involved at every level that you can. Stay current not just in the pilot seat, but on current events, regulation, etc. Study. Go do Civil Air Patrol. Look into getting your CFI in a glider or powered aircraft, even if it means a loan; do it somewhere that will hire you when you complete the training, and pick a place that has a high volume of activity.