Skinner

I have temporarily gone over the VAT threshold due to a huge spike in sales during a release of a video game. I turned over 90k in 3 weeks but have since stopped selling and will not now sell until November 2025 (release of the next game). How can I ask HMRC for an exemption as I will not get close to the threshold again or shall I register and deregister? There will be no sales to report if I register so will this be a waste of HMRC and my time? Thank you