Gi'day Frankee -- Sounds like you've a wonderful caring partner, but are already realizing that your partner might also need his 'time out' every now and again so he can help you in reinvigorating a stable and fun-loving relationship.
So if you can, give him permission to have that 'time out' and a day or two off each week where he can do his own thing and recharge his batteries.
The most important thing though is communication -- and that communication must always be two way, not just one one. Listen to your partner ... and it sounds as though you are ... and however anxious it might make you, please do try not to overly smother the one who obviously loves you the most.
Letting go can be one of the most difficult things to do in life, and just as much so for those not afflicted by anxiety. Allowing ones child to go to school on their own for the first time -- to take the car out at night for the first time on their own -- to leave a loved pet at a mates place for them to mind for more than a day -- to lose a home or a job and become homeless -- all, and much more, are part of some peoples life's journey .. and if they can go through the worst and come out stronger and wiser and kinder and more loving --- guess what --- so can you.
One step at a time .... and before you know it, like Bilbo Baggins of Hobbit fame, you will be on that road to Erabor and outsmarting dragons.
