Hello all -
I'm posting here for the first time, noticed some good tips and advice and hoping someone might have some insight to share with me on my particular situation

My daughter is 14 months old and her usual day was looking like this up until just over a month ago:
wake 6:30 to 7am
milk immediately after waking
breakfast 8am
nap 10am to 11/11:30am
lunch 12pm
milk immediately before nap at 2pm
wake 3:30/4
snack
dinner 6pm
bedtime 7:30pm
When I returned to work when she was 12 months old she began going to my parents' house 4 days a week and her naps tended to be less consistent and closer to 1 hour 15 min than a full 1.5 hours. It's been almost 2 months now that she's been at my parents' house regularly and the issue we're having now is that as of maybe about a month ago she started to fight the naps altogether - sometimes she'd play for 30 minutes or even longer before falling asleep, if falling asleep at all. Sometimes she'd skip the morning nap but more often she was taking a decent morning nap but skipping the afternoon nap. We figured she's started transitioning from needing 2 naps to just 1. We therefore reduced her morning nap to just 45 minutes and continue to put her down at 2pm for her afternoon nap, hoping she'll feel more tired and sleep right away and not just play. She still takes sometimes 15-20 min or so to fall asleep in the morning, sometimes less but often still takes 30 min or more to fall asleep in the afternoon. We made the room at my parents' house darker - similar to her room at home - and we also just got a proper crib for that room as previously she'd been sleeping in a playpen. Hoping these changes will help some but she's also now fighting her afternoon nap at home and thinking she's fighting it b/c she's still not tired enough. She went a few days where she did not nap at all in the afternoon and then for the past few days she has fallen asleep but often not until as late as 3pm and then only sleeping for one hour. Her bedtime these days has also been pushed out to about 8pm.
Any tips on what we can/should be doing to ensure she consistently takes a longer afternoon nap? We are comfortable letting go of the morning nap if it seems we should, but also realize this can't necessarily be done cold turkey. Also don't want to make her fussy/irritable from not taking a morning nap and then have her reject the afternoon nap b/c she's overtired.
Any tips would be appreciated.
Thank you!