I need help with lowering fees stripe charges my subscription project.

I am starting a project that gives context to news through history. I charge an introductory fee of $1.00/month for three months, and thereafter $2.99 month. In WordPress, I signed up with Stripe through the MemberPress plugin. But then found out Stripe charges 30 cents per each transaction, plus an additional 2.9%. I am fine with the 2.9%, but the 30 cents won't work with my low fees. Does anyone have any suggestions for me please? Thank you in advance.