Is losing 3lb a week doable without massive muscle loss?

I am a male, 6' 200lbs that has been lifting for 2.5 months and lost only 15lbs. Would a 3lb per week for 7 weeks diet be possible without losing a large amount of muscle? I know some muscle loss will happen but how could I minimize that?

Edit: note this would only be short term for 6-7 weeks and then I would clean bulk up from there