Can I bob about the cabin forever

Hi
Is there any limit to the number of times I can select a seat before travel. Travelling ot DEL in July.
I must look like a lunatic- scheduled to be a 787 so chose the first available seat in row A- 7A initially. Then learnt there was no window so chose 9A. Then thought if they changed it to an A330 no window- so to the lowest available row K seat 6K. Now 1K has become available so think I would prefer that. But will change to a row A seat if 6A or lower becomes available- Will VS get fed up with all this?
Is there any limit to the number of times I can select a seat before travel. Travelling ot DEL in July.
I must look like a lunatic- scheduled to be a 787 so chose the first available seat in row A- 7A initially. Then learnt there was no window so chose 9A. Then thought if they changed it to an A330 no window- so to the lowest available row K seat 6K. Now 1K has become available so think I would prefer that. But will change to a row A seat if 6A or lower becomes available- Will VS get fed up with all this?