At five months my second was still on a 31/2 hour FPS routine, thus having more naps.
3 under 3- 15 month gaps. Busy but loving it eìí?
I’m sorry for the delay in responding to your question.
At this age you really should follow the tired signs as an overtired baby is harder to settle.
If you want to try you would need to push forward this 45 min mid morning nap and offer an early lunch very short play and then sleep. What you really want to avoid is a very late afternoon nap which means too late in the evening.
I hope this helps
It's Time to Sleep