In all honesty, just eat. Make sure you get all your meals in and you should be fine. There are many top IFBB pros that take months off from the gym in the off season, and no one can tell me that they are losing mass.

Eating well and eating enough are key to keeping and maintaining whatever gains you have made.

Dont sweat it, hope your recovery goes well and quick. Muscle memory is a beautiful thing, you will be surprised how quickly you will get back up to heavy weights.

Take care