how common is it for your periods to be very irregular 8 months post partum?

hi ladies my daughter will be 8 months old in 2 days time, and i have so far had one light period and one proper period where i felt ovulation had ewcm etc. it was 48 days between these periods and i am now on cd29 and i think i have yet to ovulate! my cycles were 30 days or so pre pregnancy.

is this normal? does it just take a while for your body to settle down?

i am still breastfeeding but she is also on bottles so i feed very little maybe 2 or 3 small comfort feeds in 24 hours. my supply has massively reduced, but i do pump 8 ozs a day for her bedtime bottle as i believe she should have 1 good breastmilk feed a day. so i suppose that could be messing with my cycles but i would have thought once you get a period you would see some regularity or is that not the case?

i am not pregnant. (that i know of!)