Milk let down feeling - 35 weeks

Kelva • Wife. Mum of 3. Proud Australian producer of beef cattle. Expecting #4.
I have been feeling that hot, heavy milk let down feeling a few times a day recently. I have bf 3 children so I am quite familiar with it. I didn't experience this with my other pregnancies. I was induced for all their births so I have no idea what it feels like to go into labor naturally.
Could this be a sign that baby may not be far away? Has anyone else experienced this?