Do stipules = flower phase

What you are observing is the appearance of stipules and small growth on the internal nodes, is part of normal vegetative development. While these new growths are important signs of healthy plant growth, they are not necessarily an indication of pre-flowering yet. Pre-flowering is typically identified by the development of pistils (white hairs) at the nodes, which are the first signs of female flowers. At this stage, what you are seeing is likely just normal node expansion and new leaf formation. Continue monitoring the internal nodes over the next 1–2 weeks; once pistils appear, you will know the plant is entering the pre-flowering stage.

No, stipules have NOTHING to do with flowering. Pre-flowers will be actual pods (calyxes) with protruding whiie hairs (pistils). "Small growths" sounds more like secondary branching. If you are keen, go to week 7 in my diary "cannabis conundrums" and I have posted pictures of both male and female pre-flowers, as well as other interesting cannabis examples, and these pictures may help you to decide what is going on with your plant when the time comes.

hey 👋 It's hard to tell under the pink light; look at the color: if you see white, that's a sure sign that flowering has begun! Look at this picture, flowering began two days ago: https://ibb.co/1p3f2bf enjoy!