Yeah I was real happy to give up on doing photos once I realized how fast a lot of these autoflowers will yield big. It's especially useful for me to keep my environment real stable running my lights 24 hours a day makes things so much easier.
With Autos you can sometimes make them flower quicker by hitting them with the bloom nutes earlier or make them hold off a little bit by waiting. I'm usually in the waiting a little while Camp myself. It doesn't look to me like you need to start the tiger bloom yet, and more than likely by the time you do you're soil will be more nitrogen depleted anyway. So what nitrogen you have in the tiger bloom probably wouldn't be so much of an issue at that point.
It's good you're not using LED like I do if you had to feed as much calmag supplement you'd be approaching lockout in your soil by the time he got into heavy flower.