If you are bench pressing twice per week, for instance, you might find that your second workout is harder. Training more often can help you get into shape faster. This seems obvious if you examine it. Benching two or three time per week will get you back into shape quicker than training once per week. As the weights get heavy again, your body may need more rest and you will have to train less often or lower the intensity of some of your workouts, but at first, you body can probably adapt to two or three day per week workouts if you don't add weight too quickly.
Size is somewhat dependant on volume.
Personally, I like to train heavy and then do some lighter work. I don't feel like I have trained unless I lift heavy, but over the years I have grown to appreciate lighter movements done quickly, with little rest between sets. They work out soreness, are good for muscular growth, can increase flexibility and conditioning, and they seem to help the lifter avoid injury. Here is an example. If you decide to follow this type of routine, feel free to substitute movements.