I didn't speak for a month each time that I got nodes, (3 times in 3 years!) and that was incredibly difficult. It also gave me a great awareness of how much we talk, jabber, shout - just generally use and abuse our voices routinely day in and day out! I learned to weigh my words (because I had to WRITE them all out longhand!) before I silently 'talked' and gained a new appreciation for our voices that work 24/7 with very little rest. It's kind of like feet.....we walk on them all day long and never give them any care!!
If you think that you may have vocal nodules, see an ENT to properly diagnose your issue; rest your voice for 2-4 weeks - and that means no TALKING or SINGING! Then begin studying with a teacher (Bel Canto preferred) who will solve your vocal problems for life. Here's an article 'How Bel Canto Saved My Career'.
I found my Mentor Giuseppe Balestrieri in Los Angeles, and from the time I began studying with him I have never had nodules, or any other problem with my voice - and that was almost 40 years ago!! If you would like help with changing the way you sing, please check out my philosophy on healthy singing.