I usually get 500ml saline after the infusion but it can be given before.
I have gotten between 1-2g SoluMedrol per kg body weight. The next day, I take dexamethasone in 1.5mg pills, every 4-6 hours, then every 8hrs the next day
I get 50mg Benadryl IV before the infusion, then 37-50mg every 2-3 hours during the infusion and 25-50mg every 3-4 hours for the next 2 days
I get IV ketorolac, an NSAID, for brain swelling before the infusion then 500mg naproxen as needed for the next 2 days (though because NSAIDS can affect microbiome health, I try 1-2g of designs for Health CurcumEvail and 1g Thorne Boswellia instead)
I get 2g IV lorazepam prior to the infusion to stabilize mast cells, and never any other time. This knocks me out for about 3 hours.
Given your previous experience, having further interventions similar to these to reduce brain swelling might be wise.
I went to the ER twice early on, due to screaming headache and stiff neck and was given IV dexamethasone, Toradol, and Benadryl both times, so I learned to head it off at home with the above drugs.
Its a lot, but I've been doing this for 4 years now, and it's a routine.