FWIW, and this is just a problem another BB member had with BLS, so don't shoot the messenger :P Just something to keep in mind!
Her bub was doing BLS but wasn't actually consuming much because of just the sucking/getting it everywhere but down her throat etc XD And she needed to follow up with some pureed food anyway... so Just a thought, if she's going BLS you may be BF just the same amount because not much is actually going in to fill her belly iykwim