If you just took estrogen and no progesterone this past cycle, that could explain the heavier flow.
See what it's like after two weeks of progesterone, it may be much more manageable.
You won't necessarily know when you have reached menopause on cyclical hormone therapy but generally people just move onto continuous progesterone after a year or two depending on their age and individual situation, and withdrawal bleeding usually ceases after that.
There are bleed free options that you could have now if you wanted, such as a combined pill taken continuously (if under 50), a mirena IUS or using desogestrel 150mcg (off label) as the progestogen.