I LOVE nursing my son who is almost three and only nurses a few times a day but there are times when I want to stop. I don't know why but his latch has gotten worse as he got older! I see the top teeth marks that were once way above my nipple now much much closer. I ask him to open wide and take a deep latch but he always slides back to the nipple. Any suggestions on helping an older toddler's latch?