It's so variable at this age as some LOs will be on two naps for a few months longer, and others will have already been on one nap for a while. It's also an age where quite a lot of mums find that setting a nap time becomes more important than A times. We were on WU 6.-7ish, nap 11.45, BT 6/6.30 at this age just as an example but others will be doing something quite different.
Did you want to post your current routine if there are some issues you'd like help with?