I provide it, but do not use jars.
I make my own, much more cost efficient and I have better eaters for the full 4-5 years they are typically here.
The jarred stuff does not taste the same as homemade. Putting in the work of getting them accustomed to the flavors of new foods twice (from jar to table food) is an added burden, IMHO.
Steam fresh veggies, roast lean meats in baking bags with broth and then use a mini food processor. I have the one below.. the price is usually around $12 for one. Easy.
Puree's freeze well so preparing in advance is a breeze.