I would think he's getting too much milk in a day and thats probably affecting his hunger for solids. by 1YO most babies are down to 2 milk feeds am and bedtime so i would work on cutting the day time bottles.
I wouldn't worry about him liking purees at this stage but would still continue to offer more adult food. I would though not offer more adult food and then produce the puree when he refuses so he doesn't get used to refusing one meal and you producing another. Its really important to be nice and relaxed with meals and just offer food and if he eats, great, if not, fine.
My 11 month old's routine is like this at the minute:
8am Wake up and BF
9am Breakfast (porridge and fruit puree, weetabix) or yogurt and fruit or toast/pancakes
10.30am Snack (rice cakes, raisins, toast fingers, bread and cream cheese, fruit), cheese, or if we had toast for breakfast I'd offer cereal here
12.30 BF
1pm Lunch-still tend to be a spoon feed but textured.
3pm Snack and water (same as above)
6pm Dinner (what we have)
7.30/8pm BF
So you could think about altering your routine a bit so that you offe some snacks of more adult food and keep spoon feeds for a few meals and do one main meal as adult food. I'd think if you cut back on a milk feed in the day you would have more success with the solids.
I was told by my health visitor to aim for 1 pint of milk a day after 1 year (including milk in yoghurt, cooking and cheese) but not to go for much more than that as it can reduce their appetite for other things.
I was told this too.