Need help pleas😢😢

My 3 month old went from starting on a good sleep trajectory (a five hour and 3 hour stretch at 8 weeks regularly) to waking between every every 2 hours. I breastfeed her and she stops get a bottle which she does before( I pump my milk to use it when I'm not home) is my another concern. What I'm trying to figure out is what causes the frequent night wakings.

Also while nursing, she moves her arms and legs too much and after few seconds starts crying.

Her naps are not yet organized (I'm despairing that they ever will be at this rate) and so she takes 4 to 5 30-45 minute naps - if she'll take them - that I offer whenever she starts yawning, looking glazed-eyed, or rubbing her eyes.

So I would like to hear from you if you were been in the same situation and have some solution for that. Tnx in advance