This is a long one so I might answer in bits!
Children’s clothes - not gendered until 7ish. Linen smock and a kirtle (sleeveless wool dress) over it. The secret is lots of tucks in the skirt for the extra length, rather than a deep hem.
Sleeves were separate and tied or pinned on.
fermenting vegetables- not in this country afaik.
spinning - this week I used both a great wheel for wool and a distaff and spindle for flax, but I also use the spindle for wool.
I comb for the spindle and card for the great wheel. I have used detergent or soap to scour my fleece because I have never happened to be doing it in a reenactment but hot water should do it. I understand that lye or stale urine were used (both alkaline). If you are putting wool in hot water don’t do it suddenly, or it will felt.
I didn’t weave because by the 15th c it is floor looms and very much a skilled trade rather than a domestic task. You spin at home but the weaver turns it into cloth.
The smock hem is big enough that it won’t limit your movement. Then the kirtle is bigger. Fashion probably. I think mine is 120”. The gown is bigger still, but you don’t worry about the relationship between the garments.
will add more tomorrow!