@MiloS, thank you for this input!
I think virtually everyone here would recommend that you start on the D3 regimen right away. It might or might not help during this cycle, but it will help you with future ones if you stay on it. D3 regimen - ClusterBuster Files - ClusterBusters
And split those triptans: Getting partial doses from sumatriptan injectors (Imitrex, Imigran, etc.) - ClusterBuster Files - ClusterBusters
And maybe try a 5-Hour Energy or some other energy beverage as you start with the O2. This speeds up aborts for many people.
Consider the mask made for CH that many people say shortens their O2 abort time by 10% or more. ClusterO2 Kit - Clusterheadaches.com - Online Store
And at least keep busting as an option (click on New Users - Please Read Here First in the blue banner at the top of each page).