All the time, as long as injuries were not part of the absence from the game.
The body is an amazing mechanism that can proportion weight and mass, movement and balance, strength and coordination proportions, after a period of inaction. Basically, I actually think you did a good thing, giving it a rest that is.
Now you might not be able to do the 440 yard dash any time soon, but throwing is a body function that uses a lot of what you weren’t using over that period of rest. Notice in my last sentence I used the word “throwing”, not pitching. When you throw a baseball you’ll be more relaxed, in sync with what your body is telling you – without consciously paying attention to your body. You’ll also be moving back and forth and forward in just the right proportions – setting up and then releasing the ball. Again, all of this is done without stress and without being rushed – it’s fun. Keep the fun in it.
Being a position player – especially second base, I would suggest trimming down a bit. Not trying to be insulting or personal here, but, second baseman are usually quick cats with lot of range, both laterally as well as front and back. Second baseman must have the ability to throw while on the run, off balance and a few other dynamics to their resume.
As far as a throwing program, if you have the time, considering your time devoted to possibly a job and other responsibilities, I’d start off with a healthy diet first – breakfast of fruit, grain and dairy, the other meals – small in portions but varied with a balance of carbs and proteins, then an exercise routine at a local gym to tighten up those muscles and loose that belt –bumper, then I would suggest doing a little jog during the coolest part of the day to build stamina and your wind.
As far as actually throwing – your accuracy over short distances like 80-100 feet max should be your main focus right now. Go easy with the howitzer stuff; allow your shoulder platform and arms… arms like in both arms, to get use to fielding a baseball, setting up for your accurate throw, then a good release.
I’m not an infield coach so I’m just giving you’re the best of my observations of those infield coaches that I’ve seen putting their guys through their paces.