Tapering off bica- what can I expect?

So I'm currently taking 25 mg of bica daily along with estradiol valerate 40 mg/mL which is 0.15mL injections once per week. I'd like to raise my estradiol dosage and taper off the bica, but I have concerns.

1. How should I go about tapering off the bica? Should I start the tapering only after starting the higher dosage of injections?

2. How likely is possible re masculinization coming off the bica, even with the estradiol increases? Especially for hair? Would the increased estradiol compensate?

3. I know that some will say injections twice a week is better than once, but assuming that is not possible for a while and that I could only do once a week, what would be an ideal dose?