Has she completed flowering or is there longer to go? It's a bit small but maybe she got stressed a bit?

As Shagrath said only checking the trichomes can tell you. Your plant is looking good btw

Howsit going mate, I think you've got a week or 2 to go. But no more nutrients. At this stage if it were I, i would only water with Ph'd water. All of my grows I use 6.2. But use what you have been using so far for your grow just drop the ppm now. Your plant is still fairly green she needs to use up her nutrients that she's got in her. Some hairs are still nice and white so I say you can flush now for a week to 2 weeks and you'll be golden. She will not really fatten up anymore and this could be many factors, strain genetics, heat stress or any form of stunting. She looks decent though mate. Good grow 👊