No, no and no
Dreft is highly sudsing and if one reduces the amounts enough to stop excess foaming, the cleaning is probably going to go well. There is also the fact that Dreft is rather a strong detergent (to cope with baby stains), but to rinse clean (better for baby's skin). If one uses a detergent designed to be diluted in lots of water (a top loader), in a small washer that uses less water, you may not be able to get clean rinses which will lead to residue.
If you wish to still go ahead, I'd start with no more than one tablespoon and see how things go from there.