Child napping poorly

Hello, I have a 9.5 month old little girl. She normally has napped great up until the last four days or so. This is her schedule

6:30-up

6:45-bottle

8:00- breakfast

9:25-9:30- first nap (normally sleeps till 11-11:30)

12:00- bottle

12:30-1:00- lunch

3:00 (bottle then nap. She sleeps till about 4:30-5)

5:00- snack

5:30- bottle

6:30-dinner

7:45- bath

8-8:30- bedtime

She has been only taking a 30 min first nap instead of her usual. She had been teething and had a sensitive stomach for a few days but now that her teeth are through and her stomach is better, I'm not sure why she isn't sleeping well during the day. Would it be possible maybe she's ready for one nap? Should I try one nap and move her bedtime back an hour? Or just ride it out and maybe it's a rough patch? She puts herself to sleep and she also sleeps all night.