Overwhelmed and could use your help

My partner and I have been together for almost 8 years (this April) and throughout these years we’re living under one roof even during the early part of the relationship. The longest we’ve been separated is for 3 months (sometime during the 7 years) so basically pretty much we’ve been inseparable. I have a wfh job and he’s had a 9-5 until he quit and took a career break and was taking care of me full time for a year or so. We are so used to waking up and sleeping next to each other. Now, he’s landed this overseas job which meant a career for him and I am super happy and we’re finally seeing our plans that needs financial aspect in the horizon happening and all is well. We separated September 2024 and closed the distance last month since we spent the holidays together. Now I’m back in our house and I am so overwhelmed I could have broken down at the airport but stopped myself. I’m just super super heartbroken because this time I know we’re not seeing each other again in 3 months (our usual or I would love to think that we both couldn’t keep up with the distance so we just have this unconscious need to be together and it’s just timing and it’s almost always during the 3rd month). We will be working and saving up this year (our target) so I understand but dealing with this distance for me just sounds so insane especially when we’re not used to this from the beginning. I don’t have friends to relate to with minimal distance in the relationship like mine so the experience is different. Help me out what should I/we do…. We want to get out stronger from this experience so any tips, tricks, advise, stories you can tell me please share and thank you so much for the time spent reading and commenting on my post. 🤍