Heya. There are a few things you could try:
-If not already using Aptamil or Hipp, maybe switch to one of these as they produce the softest stools.
- Try using cartons for a bit rather than powder, as they should make baby's poo softer.
- 1oz cooled, boiled water in between feeds once or twice a day.
- Comfort milk could help (Aptamil, C&G and SMA all do their own comfort milks).