Noticing how something that represents existence with no pacification needing a name? That’s how foreign it is? 🤣
“What should I do? Nothing. 😳”.

Fwiw collectively IG and tic Tok are probably the worst representations of Thailand life publicly posted I’ve seen so hopefully you’re preparing in other ways. 😉
The answer to your question is yes. If your visa is issued after you’re in the country you can do a border run to activate it. I was in Thailand 3 weeks before mine was issued.
My vote would be the non OA multiple entry from your home country. Then you can keep your finances in your home bank which is preferred if it generates interest.
Each time you leave you should get a new 1 year stamp for up to 2 years maintaining the insurance requirement.
I ran into this a bit and if I recall you have to submit the insurance papers with the visa application so there is going to be a lack of sync regardless. But it’s still a better deal if you want to keep your money in your home country bank.
On my last half of my OA second year and so far it has been a better investment than the non O because I gain interest on my money sitting in my bank at home where Thailand really doesn’t pay interest.
It’s more important to get your application in order and correct because if you get it wrong you have to pay again.
My best average is about 3 days after attempting to sleep as much as possible. No stimulants or drugs will fix this.
Remember it has been proven, one night of lost sleep takes two full weeks to recover. There is no supplement for sleep. So attempting to stay awake just amplifies the problem.