I think s1212z has a lot of good recommendations worth following. My advice would be to find a steady rythm, start a habit and some rules to follow. The quickest motivator killer is falling too far behind on reviews, something you might not notice the first month or two when everything is new and exciting and you steam ahead. Three months in, the situation might be different. Take your time, but be consistent.
I saved the bunpro page as a shortcut on my phone, positioned it in the most easy to access place, directly over the home button, on the start screen.
Whenever I use my phone it works as a reminder to do my reviews if I haven’t done them for the day.
Whenever I commute, I do my reviews, at least 20, but max 40 per day, every day. It’s a good pace if you are mostly on your phone and you can take some extra time to think about the sentences. Also it is an amount that is easy enough to get through at 2330 if streaks are something that motivate you
Whenever I drop below 30 qued up reviews I add max 5 grammar points that week, spread over some days.