Hi Piratepal, sorry to hear you're suffering. When my periods started becoming irregular and heavy during perimenopause in my early 40s I was initially given tranexamic acid which was great at reducing the flow. Then as I got older and went onto HRT the GP suggested switching to the mirena coil for the progesterone part of the HRT - again I've found that great and although I had light spotting for more like 9 months than 6 months it has been great to not have periods anymore. Not everyone gets on with it, but for me it's been good.
Like you the minute I started HRT I experienced dry eyes/nose/mouth, which has improved as I've found the right HRT dose for me, and I guess I've learnt coping strategies too. Due to some other symptoms the GP thought I might have an autoimmune condition, but the rheumatologist felt that my results weren't conculsive to make a diagnosis so after a thorough check I've been dealing with symptoms via the GP. I take eyedrops during the day (thealoz duo) and another at night (can't remember the name) and use a heated eyemask when things get really bad (sometimes I admit defeat and retreat to bed with an audio book). Luckily I don't use a computer for work as I think I'd find the dry eye a lot harder, but you could maybe try different eye drops? They can be expensive, but I get them on prescription now. Sea buckthorn oil which is expensive (and not on prescription) has also helped with dryness. My husband now takes it too as he found it helped with his dry skin conditions.
I've always had a lot of allergies and persistent allergic rhinitis so I find that sticking to my antihistamines all year round, and never forgetting to take my nasal spray help with the nose dryness. I've found the best thing for dry mouth was to massage my saliva glands (Youtube video for this - 'heal with Samantha' I think? (a lot of people get on well with chewing gum and special pastiles which stick on the roof of your mouth at night to keep it lubricated (xylimelts??), however, I find the xylitol upsets my stomach).
I've also found that CBT helps with anxiety and helping to put things in perspective. Tapping and yoga nidra meditation have been great here too. Unfortunately HRT is one of those things that takes a long time and a bit of experimentation to get the right dose, but getting it right does make a difference. I'm not on testosterone as I wanted to get the HRT correct before introducing another hormone (which took 18 months), although I am considering speaking the the GP about it as my libido has taken a battering. Somewhere on MM forum there was a post about dry eye and how androgens can help (e.g. testosterone), but I don't think it's approved for this.
Good luck. I know 4 months feels like a long time, but I think a lot of women take a long time to get the right combination of things to alleviate symptoms. Let us know how you get on.
p.s. the boob thing is weird isn't it. Over the past few years I've gone from a 32 B to a 32 F - I really recommend getting properly measured (and not at M&S - I use an independent lingerie store now and they really know their stuff - they even keep an individual record of clients as sizes can change). I'm still not used to having a cleavage, but a good bra does help with discomfort.