Once your child is ready to give up night time diapers and sleep in underwear/trainers, you may find some of these suggestions helpful. If you have a super-soaker, you may need to employ some of these suggestions at naps too.
If you need even more absorbency, try using the newborn portion of a Rumparooz 6R soaker. It is contoured to fit between the legs and will lay inside your Eco-Posh trainer just perfectly, adding 3 thirsty layers to protect your toddler. Be sure to use bamboo (preferred, for softness) or hemp. DO NOT use a microfiber insert laid in the trainers, as it will dry out your toddler’s skin.
Maybe you want a little extra wetness protection, but you don’t think you need as much as adding a bamboo insert. Try using a gauze diaper doubler. This 4-inch wide strip has several layers of absorbent cotton (just like a prefold diaper), but it is thin and trim. It is also a very economical choice, costing just $1 each. It will lay in the crotch of your trainers easily without adding much bulk. This is what I use for Elaine at bed time right now. Then we add the wool cover.