Love and attachment are only incidentally related. Of course that depends on how you define love.
I would propose that love can be crudely understood as the act of giving. Naturally "investing" yourself in any "thing" particular will cause attachment to that particular "thing". And when we give, we have a tendency to at least subconsciously perceive that as an investment.
You can however rid yourself from these reflexes. You can give without expecting. Without succumbing to remorse if your feel your gift is non accepted or squandered. Children have a talent for giving parents that feeling.
Please note that I am not saying that you should not have any expectations towards your children. I believe you should. But you should not think of these goals as the desired fruits of your love. You should love unconditionally and independently set these goals in terms of what you genuinely believe will make your child happy. You will need a certain level of detachment/distance to make that assessment. You will even need to accept that your child (or anybody that you love) may reject the goals and head straight for something that makes them unhappy. If that is so, it is an experience they must be allowed to learn from (at least to the extent that the resulting harm to them is not devastating). Not expecting anything in return for your love will make it a lot easier for you to give it even then.
Try seeing the child not as your child, but the child that you choose to love regardless of the outcome. That is love without attachment.