Did women take part in Ambedkar's movement?
They did, and in organised numbers rather than as onlookers. Women were present at the Mahad satyagraha of 1927, when the movement asserted the right to drink from a public tank, and the gatherings of these years held separate sessions for women at which resolutions on their own lives were passed. The movement did not treat women's advance as something to be granted later, once the caste question was settled; it built their participation in from early on.
The resolutions of those women's meetings point the same way as the rest of his programme. They urged education for girls, the giving up of the ornaments and customs that marked a woman as inferior, and self-respect in place of the deference the old order demanded. In other words the women of the movement were asked to change their own condition by their own action — the opposite of being told to stay home for their safety.