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As above, go for a cotton cover that just keeps the dust abd filth off, you want it to not become a boil in three bag affair.
Go crazy with acf50 or similar product, leave old oil in it, new when you get it back. Battery aswell put it on trickle evry month or so for a few hours.
Some dedicated storage places will start it and ride It from one side of room to the other every month to keep things like tyres in a state of roundness though unless it's on some exotic tyres I don't see it being massive problem. Most tyres de - flat spot themselves as soon as they are up to temp.
Any advice on putting a bike into medium to long term storage in a lockup? - in England, so out of the elements, but not atmospherically dry.
In particular whether an indoor cover is a good idea.
https://www.sportsbikeshop.co.uk/motorcycle_parts/content_prod/234330
cheers.