Because i live in canada and winter time is coming...

Well , There's different stages to have the humidity at during the plants life , Firstly i would lower your humidity you already have by a little bit . During veg you want your plant to be in the 50-60% humidity ranges . This helps 2 things . Determine the sex of your plan because if your humidity is to low for to long it has a higher % of becoming male or hermie which no one wants unless your trying to make seeds . The second reason I say this is because when the plants are young they like to absorb things through there leaves and the high humidity will provide them with water without having to put some in the medium all the time . You might also wanna consider growing your plants in a smaller pot first then but them in a 5gallon pale thats alot alot of space for just a seedling . Now if your having trouble keeping the humidity up because you say its too dry then go get a small to medium sized humidifier and your going to see it wont stay to dry in your growing room . Also just as important that in flower you start off at like 55% humidity for 2 weeks then lower it by 5% a week until your flowering period is done this way you can ensure no mould will be on your big beautiful flowers ! I hope this informations serves you well on your journey ! Happy Growing!