Ok, the table she has in her book says:

Age - Number of naps - Total length of naptime hours - Night sleep hours - Total night and naptime sleep
1 month - 3 - 6-7 - 8.5-10 - 15-16
3 months - 3 - 5-6 - 10-11 - 15
6 months - 2 - 3-4 - 10-11 - 14-15
9 months - 2 - 2.5-4 - 11-12 - 14
12 months - 1-2 - 2-3 - 11.5-12 - 13-14
2 years - 1 - 1-2 - 11-12 - 13
3 years - 1 - 1-1.5 - 11 - 12
4 years - 0 - 0 - 11.5 - 11.5
5 years - 0 - 0 - 11 - 11

These are all AVERAGES, and please don't get yourself stuck on what your baby 'should' be doing as all are different. If its not broken don't fix it At 2 months its pretty normal for it to be all over the shop.