yep never stepped inside an immigration office unless it’s for a photo money well spent some will say it’s money wasted ….that all depends on your disposable income…. !!!
just make sure you have your itinerary with you as I had a similar situation spent 8 months in total in Thailand two months in uk 3 weeks in Bulgaria 2 in Philippines 2 in Germany all interwoven was told to get a full time visa multi entry and I did I knew it was cumin went through my bank accounts etc
I’ve stopped in dozens of hotels over the years they file tm30 I assume always put my home address on my 90 day on line my house owner never knows I’ve been away never rejected explain that