DIY latex mattress / adjustable base - specific health issues

Mattress Talk
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For the last two years I have been using a 2" soft (ILD 19) Dunlop latex topper (LMF) on a firm-but-springy surface (the back side of an expensive traditional mattress that had so much tufting that it was like sleeping in a freshly plowed field). The head of the bed is elevated about an inch due to acid reflux. The current topper is pretty comfortable, considering that I’m flat on my back (except pillow under knees) and the slope puts additional pressure on my hips. I want to build a new mattress with appropriate layers, incorporating the 2" soft Dunlop that I already have, if possible, for use on an adjustable base.

Before I get into specifics on layers, here are my stats that I know are the most important considerations: female, late 60’s, 130 lbs., solo sleeper. Forced to be a back sleeper due to arthritis in one shoulder (neck also) and chronic bursitis in opposite hip. I have severe osteoporosis of the spine and also fibromyalgia. I use a CPAP. Not a good formula for sleep and I have found afternoon naps to be better in my recliner in an “almost-zero-gravity” position, hence the switch to an adjustable base.

My original thought was to go with 3" firm Dunlop / existing 2" soft Dunlop / 3" soft Talalay in 8" case. I’m concerned, though, that the existing soft Dunlop is too soft for a transition layer and I wouldn’t have enough spinal support with 3" of soft Talalay on top of it.

My other thought is to start with 3" firm Dunlop / 3" medium Dunlop / existing 2" soft Dunlop in 8" case. If I feel I need more pressure relief once I’ve had some experience with the adjustable base, add 2" soft Talalay in existing topper cover.

Looking back at the failed Plushbeds experience two years ago, it was 2" Talalay ILD 24-29 over 6" Dunlop ILD 30-37 (broad range, I know). It was too firm, so is a medium (ILD 28) Dunlop going to be enough of a transition layer for the firm (ILD 38) to not feel like a brick?

I would love to hear feedback from the experts, from anyone using DIY latex on an adjustable frame, anyone my size using latex and anyone with the same health issues currently sleeping on latex.

Thanks in advance!

@Latex_Mattress_Fact1
@Sleep_EZ

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I think this is absolutely the best choice, and I think it’s likely you’ll want to add a 2" soft Talalay to the topper if you’re used to and like the feel of a latex topper. Having everything inside of one mattress cover feels noticeably different than using a topper on top of a mattress. Having a top layer that is not encased with the rest of the mattress will allow that top layer enough spatial freedom to move upwards when you lay on it, making for a more plush and enveloping feel. If you’re already used to and like that type of feel, then you’re probably going to end up with an 8" mattress and topper. Another possible option would be 3" of firm Dunlop, 3" of medium Dunlop, 2" of medium Talalay or Dunlop, all in one 8" cover, then your 2" soft on top like a topper.

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