Even sub-goals make a big number feel achievable and give you an early warning system. If you're not near 50% by week 2, you'll know to adjust before the month is lost.
That's expected — some weeks (like launch weeks) will spike. Use the sub-goals as a general trend check, not a rigid daily quota.
Yes. Carry forward what you learned into a slightly adjusted target rather than repeating the exact same plan that didn't work.