Meta PM Interview

If a HM reaches out for Meta PM opportunity, and if I am not truly ready for an interview and likely wont be for another month or so, is it ok, to schedule the 1st round a month later ? 1) How far can I push out the loop interview ? Will the HM move on ? 2) What to take care in initial HM interview ? @Meta #Meta #PM #Interview #productmanager #product #pm