Sleep training my 7 month old

Hi Everyone!

My daughter just turned 7 months this week and was looking for advice on sleep training. Since she was 3 months until about a month ago she was an all night sleeper (between 8-11 hours). Nothing about our sleep routine or time has changed since then, but for the past month or so she has been waking up crying at the same time every night (between 3:30-4:30). Her bed time routine starts around 8:30 and is asleep between 9-9:30 depending on the day, normally falls asleep from her bottle. She'll wake up again between 7-8am and her last nap is normally 30 minutes or so between 7-8pm.

Due to my living situation most of her naps are contact naps which normally last 30-40 minutes (the occasional hour or hour an a half) typically 3-4 naps a day. She is normally up for 2.5-3.5 hours between a nap. When able we try putting her in the crib during the day for a nap, but no matter how tired she is when rocking she wake up the second she hits the mattress.

Was looking for any advice, whether it is time to sleep train, help her sleep in the crib more consistently, or just have her sleep the whole night again.