Yess! We have max 1hr of naps in the day and i reckon he could keep going forever. We've started moving the nap to lunchtime a she used to have it between 9 and 10 and then no nap from then until bedtime at 7! Most nights doing bed about 630 now just due to the poor napping. He does luckily sleep well at night but is still quite behind on sleep hours for his age!
My LO can go 4-5h awake the morning and up to 7h before bed. Tbh wake windows aren’t so important once they’re on 1 nap as they can stay awake for much longer periods. Now is a good time to go by the clock instead but we still flex it depending on wake time, tiredness, what we’re doing etc. usually she wakes between 7am & 8am, naps 11.30/12 for 1h30-2h30 and then goes to bed between 7 & 7.30pm
My little boy has been on one nap since 6 months. He just doesn't seem to get tired. We "force" him to go for a nap just after dinner (12.30 ish) and he will usually have a good couple of hours but will stand up in his cot and chat over the monitor for a while first before giving up and going to sleep. He goes to be at around 7.45pm and wakes at about 7am