You wanted bud you can smoke still?
When I selectively pollinate female flower sites. I do around 7 weeks of flower and I set aside plants specifically ment for that for the extra time needed. As for will the bud get bigger. It will take new bud sites that are not pollinated to create a larger cluster of bud. After it's pollinated. Most energy is spent on keeping the species alive. (seed production). Also be careful not to let that dust get into the air lol. Shit goes the distance