How to spar/ fight taller long range fighters with good sweeps?

Long story short, got my ass handed to me in sparring last night by a taller guy, im used to fighting same size or slightly smaller, but I feel like when I fight bigger guys I take more damage trying to get in the pocket.

What is some really good advice yall have learned or sources you’ve seen that help with fighting taller fighters. Any advice helps, Its nothing personal I just want to improve but anytime I think of how to counter the bigger fighter my brain freezes and I get lit up.