In addition to the oxygen I will also down a 5hr energy drink to help slow down the ramp up time of the attack. ad CHfather said your oxygen needs to be at a much faster rate. you can get a regulator online that will allow you to set it at 25 lpm and once the attack starts to level off you can lower it as needed. the D3 regimni helps a lot of people and will take a few days to kick in but no harm in starting that and staying on it all year round. I also add Benadryl to the mix during season changes and I take 20mg of Melatonin before bed every night to help with the overnight attacks.
Non of the things mentioned above have solved my issues and cured me but they all help a little. I was at one time getting kip 10 hits several times a day lasting up to 3 hours long. At this point I average kip 5 hits lasting about 15 to 30 minutes with occasional kip 8's. I also depended on the triptans taking several shots and pills a day and that also seemed to help with the amount of hits I get. I now save that for the real bad ones and only take them maybe once every other month when i really need it.
I am in the NE part of the US and have been getting hit hard the last 2 weeks or so, I think it may have something to do with the weather in this part of the country but like it always does things will calm down and better days are ahead.