doseage?? for the flower

hi i just have a quick qestion if ive had my plant on full dose of veging nuits and when it switches to flowering can i just switch to full doses of flowering nuits or do i need to intarduse it slowly??
my plant has been flowering foe 3/4 weeks now and ive only just been able to get flower nuits but ive still been giving it the veg nuits up until now ,coz i gatherd thats got to b better than nothing... so wot shall i do?
dive in full blast with wot is says on the bottle or build it up slowly for the next cuple weeks?? please help
thanks!!

I like to do half veg and half bloom at first. Then go all bloom a bit into flowering. Try to get a nice p-k booster for your last 2-3 weeks.