Sabs - WRT bottle before nap - so long as she's going down drowsy but awake I think you are ok. I'd try a short drive mid afternoon & see if she'll have a short nap. Failing that I'd probably do EBT. She will be OK.

Kim - would your LO actually go down any earlier than 10.30am? if you are aiming for a long PM nap, you would probably need the AM nap a bit earlier in the day TBH. Maybe more like 10am? & then wake after 30mins & then aim for PM nap 2.5-3hrs later so 1/1.30pm ish. Then hopefully he should sleep a good 1.5hrs, ideally no less. Then you have around 3.5-4hrs A after the nap to BT at 6.30/7pm. I think ATM the gap between your naps is a bit too big & he's a gotten bit OT. If he won't go down earlier for the AM nap, I'd certainly just try bringing the PM nap earlier so it starts between 1.30-2pm & see if that helps to extend it.
Cyndie - oh what a conundrum with your DD's school hours. I really don't know what to suggest.

Maybe like you say, push out & cut back that AM nap a touch more & get him down as soon as you get home from school drop off for his PM nap so you can get the maximum amouont of sleep into him as you can.
Ladies, we're still (trying to) sticking out the 1 nap days but the last few have been a bit messy b/c DS is poorly with sickness, runny nose & fever. Not sure if its a bug or the after effects of his vaccinations. Yesterday, after a truly awful night of screaming, he napped 1h 50 & then also took a short 10min CN at around 4.30pm, BT 7pm. Today was a complete write off:
Wake: 6.30am
Nap: 11.15am - 12pm (woke after 1 sleep cycle chatting & happy in his cot. Left him for 40mins to see if he'd resettle. Nope - he had a dirty nappy & once changed, nap was well & truly over)
Nap: 1.30 - 2pm (in car on way to my mums - clearly shattered from short nap. Woke when the engine stopped)
CN: 4.20 - 4.40pm (in car on way home from mums - he'd been rubbing his eyes since 3.45pm)
BT: 6.30, asleep 6.45pm
So, we are just muddling along as best as we can. We started off with set nap at 11am (which was 5hrs A) but his WU has gotten a little later in the last 2 days meaning the A time shortened to 4.5hrs. After a couple of days of shorter naps I decided to nudge the nap out a little later to 11.15am (4.75hrs) as 5hrs A seems to be a touch too far just yet. I'm hoping that once he's feeling better things will settle down.
Oh ladies, also wanted to ask if anyones got advice on this: DS seems to have a poop most days just before 12midday, which unfortunately now lands right in the middle of his nap. It is disrupting his nap almost every day & I really don't know what to do about it. Any ideas how I can get him to poop at a different time of day?! As once he's up, its a real struggle (impossible really) to get him back down, & I think this is what's causing a lot of our nap troubles.