Relax! It is possible to unshrink wool that someone (not you, of course) popped into the dryer and is now small enough for little Bruiser to wear.
And pretty much all you'll need to do is help your sweater fibers relax, too, with a little help from baby shampoo worked gently into the fibers while washing it by hand.
The most time consuming part: Pinning, stretching and pinning again, to gently unshrink wool to return your sweater to its original size as it dries.
To unshrink wool, start by soaking the sweater in a sink or bucket full of warm water and about two tablespoons baby shampoo, which relaxes natural fibers such as wool, for 15 minutes.. About 15 minutes.
Remove the wool garment from the soapy water, and roll it in a towel to reduce moisture
Pin the sweater to a large cork board, stretching the neck, arms, and sides as taut as possible without damaging the fibers. Let it be for at least an hour.
Return to re-stretch and re-pin your sweater every few hours. It will take several stretching and re-pinning sessions to ease the sweater back to its original size. But if you adore that wool garment, you'll be delighted with the results.