tbh,given that it may be around 3 months before you ride again i would
a/fill tank up to full,then add a fuel stabilizer(stop inside of tank rusting&petrol turning 2 mush
b/maybe an oil change if has,nt been done 4 a while(cheap oil as it wont be used)
c/a good wash,n,wax then spray acf50 everywhere(except brake,n,discs)stop corrosion
d/as yorkie said keep battery on charge
e/"" "" "" "" "" "" roll bike a few feet every 2 weeks(stop tyre flat spots)
f/stuff a rag in end of zorst(stop moisture build up)
g/keep well covered up
h/when ready 2 go back on road change oil again 4 good stuff&also change oil filter
this is what i do,some people may think some parts are a bit extreme but it works 4 me &at the end of the day if it ain,t broke why fix it?
hope this helps anyways
