It's a bit late but I suggest staying on Flutter anyway. Though you might face troubles with APIs integration, overall development experience is better on Flutter, so you save some time & power on the project in general. Dunno if it's of any use to you, but as a prove I attach one of many Flutter vs RN comparison articles (you can find any other similar yourself on the web though), hope it helps you make a decision
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Thank you for responding to this and sorry I didn't respond. I actually chose Flutter and it has been going great for me :)