Is it necessary to put structure in the day of a 15-month old boy/girl?

I follow a paticular schedule since my daughter one year old.I just fixed her meal time her snacks time her milk time her sleeping time everything.And as my daughter grown up I just slowly change her schedule according to her need.But I think if you follow a schedule your child become so deciplined and organised.I myself follow a sechdule and my daughter watch it carefully.And now it becomes her habit.

By the sound of it you already have a structure in your baby's life. Meals and bedtimes give structure even when the structure is relatively flexible. I take my sons lead in things, if he is really tired he needs sleep regardless of the fact if it is nap time or sleeptime or not. Just like adults they have days where they are tired earlier or hungry earlier. I believe structure can be flexible

I think humans are creature of habit. So I usually do the same thing everyday. I didn't create the schedule, but my son has the same pattern everyday as far as eating and sleeping. I do play with him still (he's 1 1/2), he likes to be chased, we work with building blocks and legos, and read. He knows that after lunch we'll go outside, and after dinner we'll go outside. It's just a habit we've created. I've never really believed in making a schedule, but more like you have stated, following their lead. I did that when he was a baby too. I think it's less stressful for the parents and child.

I do the same thing with my 5 month old, maybe later on when she is busier I'll make a flexible schedule, just so I can do housework, etc but for now its working fine. She eats every 3 hours and was sleeping for a half hour after being awake for 1 1/1 hours but the last few days she's been changing that. Now she is awake for 2 hours in the morning or so and then takes an hour and a half nap and then is awake for 4 hours or more, then naps in the afternoon. We bath her every second day since she doesn't get "dirty" very often. She goes to bed at 7:30 ish and she's pretty well done that herself.