Whats the ratio in ejuice with rosin?

Hi, i wanna make some rosin out of my buds to get some thc in my ejuice. But I am unsure of the ratio mix between the two. The strain I am gonna be using is amnesia haze with around 20-22% thc. I was wondering if 1:1 ratio would be to much of an effect. As I like to take multiable hits. I have a pretty moderate tolerance (only smoke weed in the weekends.)

Conclusion: 1milligram of rosin and 1 milligram of ejuice mixed up, is that a good mix or am I way off here. Someone please help